Quectel EC25-AUX Hardware Design Download

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LTE Standard Module Series

EC25 Hardware Design

EC25_Hardware_Design 21 / 130

Baseband

PMIC

Transceiver

NAND

DDR2

SDRAM

PAM

LNA

Switch

ANT_MAIN

ANT_DIV

ANT_GNSS

VBAT_BB

VBAT_RF

APT

PWRKEY

ADCs

VDD_EXT

USB (U)SIM

PCM

UARTs

I2C

RESET_N

19.2M

STATUS

GPIOs

SAW

Control

Duplex

SAW

PRx

DRx

WLAN

SGMII

SAW

Figure 1: Functional Diagram

2.4. Evaluation Board

In order to help customers develop applications with EC25, Quectel supplies an evaluation board
(UMTS&LTE EVB), USB to RS-232 converter cable, earphone, antenna and other peripherals to control
or test the module. For more details, please refer to

document [8]

Summary of Contents for EC25-AUX

Page 1: ...Module EC25 AUX EC25 Hardware Design LTE Standard Module Series Rev EC25_Hardware_Design_V2 2 Date 2019 08 19 Status Released www quectel com ...

Page 2: ...S THE INFORMATION PROVIDED IS BASED UPON CUSTOMERS REQUIREMENTS QUECTEL MAKES EVERY EFFORT TO ENSURE THE QUALITY OF THE INFORMATION IT MAKES AVAILABLE QUECTEL DOES NOT MAKE ANY WARRANTY AS TO THE INFORMATION CONTAINED HEREIN AND DOES NOT ACCEPT ANY LIABILITY FOR ANY INJURY LOSS OR DAMAGE OF ANY KIND INCURRED BY USE OF OR RELIANCE UPON THE INFORMATION ALL INFORMATION SUPPLIED HEREIN IS SUBJECT TO C...

Page 3: ...ded notes for ADC interface in Chapter 3 13 8 Updated GNSS performance in Table 21 9 Updated operating frequencies of module in Table 23 10 Added current consumption in Chapter 6 4 11 Updated RF output power in Chapter 6 5 12 Added RF receiving sensitivity in Chapter 6 6 1 2 2016 11 04 Lyndon LIU Michael ZHANG 1 Added SGMII and WLAN interfaces in Table 2 2 Updated function diagram in Figure 1 3 Up...

Page 4: ...B interface in Figure 19 7 Updated PCM mode in Chapter 3 12 8 Added SD card interface in Chapter 3 13 9 Updated USB_BOOT reference circuit in Chapter 3 20 10 Updated module operating frequencies in Table 26 11 Updated antenna requirements in Table 30 12 Updated EC25 series module current consumption in Chapter 6 4 13 Updated EC25 series module conducted RF receiving sensitivity in Chapter 6 6 14 A...

Page 5: ...3 Added EC25 EC current consumption in Table 42 14 Added EC25 EUX current consumption in Table 43 15 Added EC25 MX current consumption in Table 44 16 Updated EC25 E conducted RF receiving sensitivity in Table 47 17 Updated EC25 A conducted RF receiving sensitivity in Table 48 18 Updated EC25 V conducted RF receiving sensitivity in Table 49 19 Updated EC25 AUT conducted RF receiving sensitivity in ...

Page 6: ...the module in Figure 45 8 Added tape and reel directions in Figure 51 2 2 2019 08 19 Ward WANG Owen WEI Frank WANG 1 Updated EC25 J current consumption in Table 37 2 Deleted the LTE TDD bands information of EC25 AUT current consumption in Table 39 3 Updated EC25 EC current consumption in Table 43 4 Updated EC25 EUX current consumption in Table 44 5 Added EC25 AUX current consumption in Table 46 6 ...

Page 7: ...T Application 37 3 5 1 2 USB Application with USB Remote Wakeup Function 37 3 5 1 3 USB Application with USB Suspend Resume and RI Function 38 3 5 1 4 USB Application without USB Suspend Function 39 3 5 2 Airplane Mode 39 3 6 Power Supply 40 3 6 1 Power Supply Pins 40 3 6 2 Decrease Voltage Drop 41 3 6 3 Reference Design for Power Supply 42 3 6 4 Monitor the Power Supply 42 3 7 Power on off Scenar...

Page 8: ...gn of RF Antenna Interface 73 5 1 4 Reference Design of RF Layout 73 5 2 GNSS Antenna Interface 75 5 3 Antenna Installation 77 5 3 1 Antenna Requirement 77 5 3 2 Recommended RF Connector for Antenna Installation 78 6 Electrical Reliability and Radio Characteristics 80 6 1 Absolute Maximum Ratings 80 6 2 Power Supply Ratings 81 6 3 Operation and Storage Temperatures 81 6 4 Current Consumption 82 6 ...

Page 9: ...le Series EC25 Hardware Design EC25_Hardware_Design 8 130 9 Appendix A References 124 10 Appendix B GPRS Coding Schemes 128 11 Appendix C GPRS Multi slot Classes 129 12 Appendix D EDGE Modulation and Coding Schemes 131 ...

Page 10: ...RFACES 62 TABLE 18 CHARACTERISTIC OF ADC 62 TABLE 19 PIN DEFINITION OF SGMII INTERFACE 63 TABLE 20 PIN DEFINITION OF NETWORK CONNECTION STATUS ACTIVITY INDICATOR 65 TABLE 21 WORKING STATE OF NETWORK CONNECTION STATUS ACTIVITY INDICATOR 65 TABLE 22 PIN DEFINITION OF STATUS 66 TABLE 23 BEHAVIORS OF RI 67 TABLE 24 PIN DEFINITION OF USB_BOOT INTERFACE 67 TABLE 25 GNSS PERFORMANCE 69 TABLE 26 PIN DEFIN...

Page 11: ...TABLE 54 EC25 AUT CONDUCTED RF RECEIVING SENSITIVITY 108 TABLE 55 EC25 AUTL CONDUCTED RF RECEIVING SENSITIVITY 108 TABLE 56 EC25 AF CONDUCTED RF RECEIVING SENSITIVITY 108 TABLE 57 EC25 AFX CONDUCTED RF RECEIVING SENSITIVITY 109 TABLE 58 EC25 EU CONDUCTED RF RECEIVING SENSITIVITY 110 TABLE 59 EC25 EC CONDUCTED RF RECEIVING SENSITIVITY 110 TABLE 60 EC25 EUX CONDUCTED RF RECEIVING SENSITIVITY 111 TAB...

Page 12: ...IRCUIT OF U SIM INTERFACE WITH A 6 PIN U SIM CARD CONNECTOR 49 FIGURE 19 REFERENCE CIRCUIT OF USB APPLICATION 50 FIGURE 20 REFERENCE CIRCUIT WITH TRANSLATOR CHIP 53 FIGURE 21 REFERENCE CIRCUIT WITH TRANSISTOR CIRCUIT 53 FIGURE 22 PRIMARY MODE TIMING 54 FIGURE 23 AUXILIARY MODE TIMING 55 FIGURE 24 REFERENCE CIRCUIT OF PCM APPLICATION WITH AUDIO CODEC 56 FIGURE 25 REFERENCE CIRCUIT OF SD CARD INTERF...

Page 13: ...REFERENCED HEATSINK DESIGN HEATSINK AT THE TOP OF THE MODULE 114 FIGURE 43 REFERENCED HEATSINK DESIGN HEATSINK AT THE BACKSIDE OF CUSTOMERS PCB 114 FIGURE 44 MODULE TOP AND SIDE DIMENSIONS 116 FIGURE 45 MODULE BOTTOM DIMENSIONS BOTTOM VIEW 117 FIGURE 46 RECOMMENDED FOOTPRINT TOP VIEW 118 FIGURE 47 TOP VIEW OF THE MODULE 119 FIGURE 48 BOTTOM VIEW OF THE MODULE 119 FIGURE 49 REFLOW SOLDERING THERMAL...

Page 14: ...EPL ACED BY AN INCORRECT TYPE DISPOSE OF USED BATTERIES ACCORDING To THE INSTRUCTIONS 2 Operating temperature 40 C to 85 C 3 EC25 AUX EC25 AUX MINIPCIEsupport frequency bands GSM900 1800 WCDMA I V VIII LTE Band 1 3 5 7 8 20 28 40 4 EC25 AUX EC25 AUX MINIPCIE max output power GSM900 1800 WCDMA I V VIII LTE Band 1 3 5 7 8 20 28 40 23dBm The antenna s used for this transmitter must not be co located ...

Page 15: ...appliances in an aircraft is forbidden to prevent interference with communication systems If the device offers an Airplane Mode then it should be enabled prior to boarding an aircraft Please consult the airline staff for more restrictions on the use of wireless devices on boarding the aircraft Wireless devices may cause interference on sensitive medical equipment so please be aware of the restrict...

Page 16: ...s obey all posted signs to turn off wireless devices such as your phone or other cellular terminals Areas with potentially explosive atmospheres include fuelling areas below decks on boats fuel or chemical transfer or storage facilities areas where the air contains chemicals or particles such as grain dust or metal powders etc ...

Page 17: ...and EC25 MX Customers can choose a dedicated type based on the region or operator The following table shows the frequency bands of EC25 series module Table 1 Frequency Bands of EC25 Series Module Modules2 LTE Bands WCDMA Bands GSM Bands Rx diversity GNSS1 EC25 E FDD B1 B3 B5 B7 B8 B20 TDD B38 B40 B41 B1 B5 B8 900 1800MHz Y GPS GLONASS BeiDou Compass Galileo QZSS EC25 A FDD B2 B4 B12 B2 B4 B5 N Y E...

Page 18: ...metering tracking system security router wireless POS mobile computing device PDA phone tablet PC etc EC25 is an SMD type module which can be embedded into applications through its 144 pin pads including 80 LCC signal pads and 64 LGA pads 2 2 Key Features The following table describes the detailed features of EC25 module Table 2 Key Features of EC25 Module EC25 AFX4 FDD B2 B4 B5 B12 B13 B14 B66 B7...

Page 19: ...nd WCDMA Support QPSK 16 QAM and 64 QAM modulation DC HSDPA Max 42Mbps DL HSUPA Max 5 76Mbps UL WCDMA Max 384Kbps DL Max 384Kbps UL GSM Features GPRS Support GPRS multi slot class 33 33 by default Coding scheme CS 1 CS 2 CS 3 and CS 4 Max 107Kbps DL Max 85 6Kbps UL EDGE Support EDGE multi slot class 33 33 by default Support GMSK and 8 PSK for different MCS Modulation and Coding Scheme Downlink cod...

Page 20: ...d data transmission Baud rates reach up to 921600bps 115200bps by default Support RTS and CTS hardware flow control Debug UART Used for Linux console and log output 115200bps baud rate SD Card Interface1 Support SD 3 0 protocol SGMII Interface1 Support 10M 100M 1000M Ethernet work mode Support maximum 150Mbps DL 50Mbps UL for 4G network Wireless Connectivity Interfaces1 Support a low power SDIO 3 ...

Page 21: ...overable malfunction There are also no effects on radio spectrum and no harm to radio network Only one or more parameters like Pout might reduce in their value and exceed the specified tolerances When the temperature returns to normal operation temperature levels the module will meet 3GPP specifications again 4 means under development 2 3 Functional Diagram The following figure shows a block diagr...

Page 22: ...M PCM UARTs I2C RESET_N 19 2M XO STATUS GPIOs SAW Control IQ Control Duplex SAW Tx PRx DRx WLAN SD BT SGMII SAW Figure 1 Functional Diagram 2 4 Evaluation Board In order to help customers develop applications with EC25 Quectel supplies an evaluation board UMTS LTE EVB USB to RS 232 converter cable earphone antenna and other peripherals to control or test the module For more details please refer to...

Page 23: ...cation platform The subsequent chapters will provide detailed descriptions of the following functions pins interfaces Power supply U SIM interface USB interface UART interfaces PCM and I2C interfaces SD card interface1 ADC interfaces Status indication SGMII interface1 Wireless connectivity interfaces1 USB_BOOT interface 1 SD card wireless connectivity and SGMII interfaces are not supported on Thre...

Page 24: ...74 75 76 77 78 79 80 81 82 83 84 100 101 102 106 107 111 112 103 104 109 105 110 89 94 98 88 93 97 86 91 96 85 90 95 99 87 92 108 113 RESERVED RESERVED 117 126 125 124 123 122 121 118 127 128 115 USB_BOOT 1 RESERVED 116 140 1371 136 1 135 134 133 132 131 130 129 114 VDD_SDIO Power Pins Signal Pins GND Pins RESERVED RESERVED 141 142 RESERVED RESERVED 143 144 119 120 WLAN Pins RESERVED Pins Bluetoot...

Page 25: ...ould be connected to ground in the design RESERVED pins 73 84 should not be designed in schematic and PCB decal and these pins should be served as a keepout area 3 3 Pin Description The following tables show the pin definition of EC25 module Table 3 I O Parameters Definition Table 4 Pin Description Type Description AI Analog Input AO Analog Output DI Digital Input DO Digital Output IO Bidirectiona...

Page 26: ... is 0 8V because of the diode drop in the Qualcomm chipset RESET_N 20 DI Reset signal of the module VIHmax 2 1V VIHmin 1 3V VILmax 0 5V If unused keep it open Status Indication Pin Name Pin No I O Description DC Characteristics Comment STATUS 61 OD Indicate the module operating status The drive current should be less than 0 9mA An external pull up resistor is required If unused keep it open NET_MO...

Page 27: ...M Interface Pin Name Pin No I O Description DC Characteristics Comment USIM_GND 10 Specified ground for U SIM card USIM_ PRESENCE 13 DI U SIM card insertion detection VILmin 0 3V VILmax 0 6V VIHmin 1 2V VIHmax 2 0V 1 8V power domain If unused keep it open USIM_VDD 14 PO Power supply for U SIM card For 1 8V U SIM Vmax 1 9V Vmin 1 7V For 3 0V U SIM Vmax 3 05V Vmin 2 7V IOmax 50mA Either 1 8V or 3 0V...

Page 28: ...used keep it open CTS 64 DO Clear to send VOLmax 0 45V VOHmin 1 35V 1 8V power domain If unused keep it open RTS 65 DI Request to send VILmin 0 3V VILmax 0 6V VIHmin 1 2V VIHmax 2 0V 1 8V power domain If unused keep it open DTR 66 DI Data terminal ready sleep mode control VILmin 0 3V VILmax 0 6V VIHmin 1 2V VIHmax 2 0V 1 8V power domain Pulled up by default Low level wakes up the module If unused ...

Page 29: ...ep it open PCM Interface1 Pin Name Pin No I O Description DC Characteristics Comment PCM_IN 24 DI PCM data input VILmin 0 3V VILmax 0 6V VIHmin 1 2V VIHmax 2 0V 1 8V power domain If unused keep it open PCM_OUT 25 DO PCM data output VOLmax 0 45V VOHmin 1 35V 1 8V power domain If unused keep it open PCM_SYNC 26 IO PCM data frame synchronization signal VOLmax 0 45V VOHmin 1 35V VILmin 0 3V VILmax 0 6...

Page 30: ...d SDIO bus DATA3 1 8V signaling VOLmax 0 45V VOHmin 1 4V VILmin 0 3V VILmax 0 58V VIHmin 1 27V VIHmax 2 0V 3 0V signaling VOLmax 0 38V VOHmin 2 01V VILmin 0 3V VILmax 0 76V VIHmin 1 72V VIHmax 3 34V SDIO signal level can be selected according to SD card supported level please refer to SD 3 0 protocol for more details If unused keep it open SDC2_ DATA2 29 IO SD card SDIO bus DATA2 1 8V signaling VO...

Page 31: ... 1 4V VILmin 0 3V VILmax 0 58V VIHmin 1 27V VIHmax 2 0V 3 0V signaling VOLmax 0 38V VOHmin 2 01V VILmin 0 3V VILmax 0 76V VIHmin 1 72V VIHmax 3 34V SDIO signal level can be selected according to SD card supported level please refer to SD 3 0 protocol for more details If unused keep it open SDC2_CLK 32 DO SD card SDIO bus clock 1 8V signaling VOLmax 0 45V VOHmin 1 4V 3 0V signaling VOLmax 0 38V VOH...

Page 32: ...max 50mA 1 8V 2 85V configurable Cannot be used for SD card power If unused keep it open SGMII Interface Pin Name Pin No I O Description DC Characteristics Comment EPHY_RST_ N 119 DO Ethernet PHY reset For 1 8V VOLmax 0 45V VOHmin 1 4V For 2 85V VOLmax 0 35V VOHmin 2 14V 1 8V 2 85V power domain If unused keep it open EPHY_INT_N 120 DI Ethernet PHY interrupt VILmin 0 3V VILmax 0 6V VIHmin 1 2V VIHm...

Page 33: ...II MDIO pins If unused keep it open SGMII_TX_M 123 AO SGMII transmission minus Connect with a 0 1uF capacitor and is close to the PHY side If unused keep it open SGMII_TX_P 124 AO SGMII transmission plus Connect with a 0 1uF capacitor and is close to the PHY side If unused keep it open SGMII_RX_P 125 AI SGMII receiving plus Connect with a 0 1uF capacitor and is close to EC25 module If unused keep ...

Page 34: ... data bus D0 VOLmax 0 45V VOHmin 1 35V VILmin 0 3V VILmax 0 6V VIHmin 1 2V VIHmax 2 0V 1 8V power domain If unused keep it open SDC1_CLK 133 DO WLAN SDIO bus clock VOLmax 0 45V VOHmin 1 35V 1 8V power domain If unused keep it open SDC1_CMD 134 DO WLAN SDIO bus command VOLmax 0 45V VOHmin 1 35V 1 8V power domain If unused keep it open PM_ENABLE 127 DO WLAN power control VOLmax 0 45V VOHmin 1 35V 1 ...

Page 35: ...wer domain If unused keep it open BT_TXD 38 DO BT UART transmit data VOLmax 0 45V VOHmin 1 35V 1 8V power domain If unused keep it open BT_RXD 39 DI BT UART receive data VILmin 0 3V VILmax 0 6V VIHmin 1 2V VIHmax 2 0V 1 8V power domain If unused keep it open BT_CTS 40 DO BT UART clear to send VOLmax 0 45V VOHmin 1 35V 1 8V power domain Cannot be pulled up before startup If unused keep it open BT_E...

Page 36: ... At low voltage level module can enter airplane mode If unused keep it open AP_READY 2 DI Application processor sleep state detection VILmin 0 3V VILmax 0 6V VIHmin 1 2V VIHmax 2 0V 1 8V power domain If unused keep it open USB_BOOT Interface Pin Name Pin No I O Description DC Characteristics Comment USB_BOOT 115 DI Force the module to enter emergency download mode VILmin 0 3V VILmax 0 6V VIHmin 1 ...

Page 37: ...istered on the network and it is ready to send and receive data Talk Data Network connection is ongoing In this mode the power consumption is decided by network setting and data transfer rate Minimum Functionality Mode AT CFUN command can set the module to a minimum functionality mode without removing the power supply In this case both RF function and U SIM card will be invalid Airplane Mode AT CF...

Page 38: ...will wake up the host Please refer to Chapter 3 19 for details about RI behaviors AP_READY will detect the sleep state of the host can be configured to high level or low level detection Please refer to AT QCFG apready command for details 3 5 1 2 USB Application with USB Remote Wakeup Function If the host supports USB suspend resume and remote wakeup functions the following three preconditions must...

Page 39: ...spend Resume and RI Function If the host supports USB suspend and resume but does not support remote wake up function the RI signal is needed to wake up the host There are three preconditions to let the module enter sleep mode Execute AT QSCLK 1 command to enable sleep mode Ensure the DTR is held at high level or keep it open The host s USB bus which is connected with the module s USB interface en...

Page 40: ...TR is held at high level or keep it open Disconnect USB_VBUS The following figure shows the connection between the module and the host Figure 6 Sleep Mode Application without Suspend Function Switching on the power switch to supply power to USB_VBUS will wake up the module Please pay attention to the level match shown in dotted line between the module and the host For more details about EC25 power...

Page 41: ...ault It can be enabled by AT QCFG airplanecontrol command and this command is under development 2 The execution of AT CFUN command will not affect GNSS function 3 6 Power Supply 3 6 1 Power Supply Pins EC25 provides four VBAT pins for connection with the external power supply There are two separate voltage domains for VBAT Two VBAT_RF pins for module s RF part Two VBAT_BB pins for module s baseban...

Page 42: ... 33pF 10pF for composing the MLCC array and place these capacitors close to VBAT_BB VBAT_RF pins The main power supply from an external application has to be a single voltage source and can be expanded to two sub paths with star structure The width of VBAT_BB trace should be no less than 1mm and the width of VBAT_RF trace should be no less than 2mm In principle the longer the VBAT trace is the wid...

Page 43: ...ference between the input source and the desired output VBAT a buck converter is preferred to be used as the power supply The following figure shows a reference design for 5 0V input power source The typical output of the power supply is about 3 8V and the maximum load current is 3 0A Figure 9 Reference Circuit of Power Supply In order to avoid damaging internal flash please do not switch off the ...

Page 44: ...xternal pull up resistor outputs a low level PWRKEY pin can be released A simple reference circuit is illustrated in the following figure PWRKEY 4 7K 47K 500ms 10nF Turn on pulse Figure 10 Turn on the Module by Using Driving Circuit The other way to control the PWRKEY is using a button directly When pressing the key electrostatic strike may generate from finger Therefore a TVS component is indispe...

Page 45: ...on scenario is illustrated in the following figure VIL 0 5V VH 0 8V VBAT PWRKEY 500ms RESET_N STATUS OD Inactive Active UART NOTE 1 Inactive Active USB 2 5s 12s 13s VDD_EXT About 100ms BOOT_CONFIG USB_BOOT Pins 100ms After this time the BOOT_CONFIG pins can be set to high level by external circuit Figure 12 Timing of Turning on Module ...

Page 46: ... Turn off the module using the PWRKEY pin Normal power off procedure Turn off the module using AT QPOWD command 3 7 2 1 Turn off Module Using the PWRKEY Pin Driving the PWRKEY pin to a low level voltage for at least 650ms the module will execute power off procedure after the PWRKEY is released The power off scenario is illustrated in the following figure VBAT PWRKEY 29 5s 650ms RUNNING Power down ...

Page 47: ...power off command Otherwise the module will be turned on again after successfully turn off 3 8 Reset Module The RESET_N pin can be used to reset the module The module can be reset by driving RESET_N to a low level voltage for time between 150ms and 460ms Table 8 Pin Definition of RESET_N The recommended circuit is similar to the PWRKEY control circuit An open drain collector driver or button can b...

Page 48: ...ted in the following figure Figure 16 Timing of Resetting Module 1 Use RESET_N only when failed to turn off the module by AT QPOWD command and PWRKEY pin 2 Ensure that there is no large capacitance on PWRKEY and RESET_N pins 3 9 U SIM Interface The U SIM interface circuitry meets ETSI and IMT 2000 requirements Both 1 8V and 3 0V U SIM cards are supported NOTES ...

Page 49: ...t of U SIM Interface with an 8 pin U SIM Card Connector If U SIM card detection function is not needed please keep USIM_PRESENCE unconnected A reference circuit for U SIM interface with a 6 pin U SIM card connector is illustrated in the following figure Pin Name Pin No I O Description Comment USIM_VDD 14 PO Power supply for U SIM card Either 1 8V or 3 0V is supported by the module automatically US...

Page 50: ... as possible If the ground is complete on customers PCB USIM_GND can be connected to PCB ground directly To avoid cross talk between USIM_DATA and USIM_CLK keep them away from each other and shield them with surrounded ground In order to offer good ESD protection it is recommended to add a TVS diode array whose parasitic capacitance should not be more than 15pF The 0Ω resistors should be added in ...

Page 51: ... following table shows the pin definition of USB interface Table 10 Pin Description of USB Interface For more details about the USB 2 0 specifications please visit http www usb org home The USB interface is recommended to be reserved for firmware upgrade in customers designs The following figure shows a reference circuit of USB interface Figure 19 Reference Circuit of USB Application Pin Name Pin ...

Page 52: ...s and RF signal traces It is important to route the USB differential traces in inner layer with ground shielding on not only upper and lower layers but also right and left sides Pay attention to the influence of junction capacitance of ESD protection components on USB data lines Typically the capacitance value should be less than 2 0pF Keep the ESD protection components to the USB connector as clo...

Page 53: ...ustomers application is equipped with a 3 3V UART interface A level translator TXS0108EPWR provided by Texas Instruments is recommended The following figure shows a reference design RTS 65 DI Request to send DTR 66 DI Data terminal ready sleep mode control TXD 67 DO Transmit data RXD 68 DI Receive data Pin Name Pin No I O Description Comment DBG_TXD 12 DO Transmit data 1 8V power domain DBG_RXD 11...

Page 54: ...uit with Translator Chip Please visit http www ti com for more information Another example with transistor translation circuit is shown as below The circuit design of dotted line section can refer to the design of solid line section in terms of both module s input and output circuit designs but please pay attention to the direction of connection Figure 21 Reference Circuit with Transistor Circuit ...

Page 55: ...represents the MSB In this mode the PCM interface supports 256KHz 512KHz 1024KHz or 2048KHz PCM_CLK at 8KHz PCM_SYNC and also supports 4096KHz PCM_CLK at 16KHz PCM_SYNC In auxiliary mode the data is sampled on the falling edge of the PCM_CLK and transmitted on the rising edge The PCM_SYNC rising edge represents the MSB In this mode the PCM interface operates with a 256KHz 512KHz 1024KHz or 2048KHz...

Page 56: ...onization format with 2048KHz PCM_CLK and 8KHz PCM_SYNC Please refer to document 2 for more details about AT QDAI command The following figure shows a reference design of PCM interface with external codec IC Pin Name Pin No I O Description Comment PCM_IN 24 DI PCM data input 1 8V power domain PCM_OUT 25 DO PCM data output 1 8V power domain PCM_SYNC 26 IO PCM data frame synchronization signal 1 8V ...

Page 57: ...orts SDIO 3 0 interface for SD card The following table shows the pin definition of SD card interface Table 15 Pin Definition of SD Card Interface Pin Name Pin No I O Description Comment SDC2_DATA3 28 IO SD card SDIO bus DATA3 SDIO signal level can be selected according to SD card supported level please refer to SD 3 0 protocol for more details If unused keep it open SDC2_DATA2 29 IO SD card SDIO ...

Page 58: ...mong 10KΩ 100KΩ and the recommended value is 100KΩ VDD_SDIO should be used as the pull up power In order to adjust signal quality it is recommended to add 0Ω resistors R1 R6 in series between the module and the SD card The bypass capacitors C1 C6 are reserved and not mounted by default All resistors and bypass capacitors should be placed close to the module In order to offer good ESD protection it...

Page 59: ...s 3 14 Wireless Connectivity Interfaces EC25 supports a low power SDIO 3 0 interface for WLAN and UART PCM interfaces for BT function The following table shows the pin definition of wireless connectivity interfaces Table 16 Pin Definition of Wireless Connectivity Interfaces Pin Name Pin No I O Description Comment WLAN Part SDC1_DATA3 129 IO WLAN SDIO data bus D3 1 8V power domain SDC1_DATA2 130 IO...

Page 60: ...N BT coexistence signal 1 8V power domain Cannot be pulled up before startup WLAN_SLP_CLK 118 DO WLAN sleep clock BT Part BT_RTS 37 DI BT UART request to send 1 8V power domain BT_TXD 38 DO BT UART transmit data 1 8V power domain BT_RXD 39 DI BT UART receive data 1 8V power domain BT_CTS 40 DO BT UART clear to send 1 8V power domain Cannot be pulled up before startup PCM_IN1 24 DI PCM data input 1...

Page 61: ...OUT PCM_IN PCM_SYNC PCM_CLK VDD_EXT VIO COEX_UART_TX COEX_UART_RX LTE_UART_TXD LTE_UART_RXD COEX Bluetooth Figure 26 Reference Circuit of Wireless Connectivity Interfaces with FC20 Module 1 FC20 module can only be used as a slave device 2 When BT function is enabled on EC25 module PCM_SYNC and PCM_CLK pins are only used to output signals BT function is under development 3 1 Pins 24 27 are multiple...

Page 62: ...nd DATA CMD less than 1mm and total routing length less than 50mm Keep termination resistors within 15Ω 24Ω on clock lines near the module and keep the route distance from the module clock pins to termination resistors less than 5mm Make sure the adjacent trace spacing is 2 times of the trace width and bus capacitance is less than 15pF 3 14 2 BT Interface EC25 supports a dedicated UART interface a...

Page 63: ...o management interfaces The key features of the SGMII interface are shown below IEEE802 3 compliant Support 10M 100M 1000M Ethernet work mode Support maximum 150Mbps DL 50Mbps UL for 4G network Support VLAN tagging Support IEEE1588 and Precision Time Protocol PTP Can be used to connect to external Ethernet PHY like AR8033 or to an external switch Management interfaces support dual voltage 1 8V 2 8...

Page 64: ..._INT_N 120 DI Ethernet PHY interrupt 1 8V power domain SGMII_MDATA 121 IO SGMII MDIO Management Data Input Output data 1 8V 2 85V power domain SGMII_MCLK 122 DO SGMII MDIO Management Data Input Output clock 1 8V 2 85V power domain USIM2_VDD 128 PO SGMII MDIO pull up power source Configurable power source 1 8V 2 85V power domain External pull up power source for SGMII MDIO pins SGMII Signal Part SG...

Page 65: ...Keep the maximum trace length less than 10 inch and keep skew on the differential pairs less than 20mil The differential impedance of SGMII data trace is 100Ω 10 and the reference ground of the area should be complete Make sure the trace spacing between SGMII RX and TX is at least 3 times of the trace width and the same to the adjacent signal traces SGMII interface is not supported on ThreadX modu...

Page 66: ...me Pin No I O Description Comment NET_MODE 5 DO Indicate the module s network registration mode 1 8V power domain Cannot be pulled up before startup NET_STATUS 6 DO Indicate the module s network activity status 1 8V power domain Pin Name Logic Level Changes Network Status NET_MODE Always High Registered on LTE network Always Low Others NET_STATUS Flicker slowly 200ms High 1800ms Low Network search...

Page 67: ...TUS The following figure shows different circuit designs of STATUS and customers can choose either one according to customers application demands Figure 30 Reference Circuits of STATUS The status pin cannot be used as indication of module shutdown status when VBAT power supply is removed 3 19 Behaviors of RI AT QCFG risignaltype physical command can be used to configure RI behavior No matter on wh...

Page 68: ... USB_BOOT Interface EC25 provides a USB_BOOT pin Customers can pull up USB_BOOT to 1 8V before VDD_EXT is powered up and the module will enter emergency download mode when it is powered on In this mode the module supports firmware upgrade over USB interface Table 24 Pin Definition of USB_BOOT Interface The following figure shows a reference circuit of USB_BOOT interface State Response Idle RI keep...

Page 69: ...nload mode when it is powered on NOTE 1 Figure 32 Timing Sequence for Entering Emergency Download Mode 1 Please make sure that VBAT is stable before pulling down PWRKEY pin It is recommended that the time between powering up VBAT and pulling down PWRKEY pin is no less than 30ms 2 When using MCU to control module to enter the emergency download mode please follow the above timing sequence It is not...

Page 70: ... interface by default By default EC25 GNSS engine is switched off It has to be switched on via AT command For more details about GNSS engine technology and configurations please refer to document 3 4 2 GNSS Performance The following table shows the GNSS performance of EC25 Table 25 GNSS Performance Parameter Description Conditions Typ Unit Sensitivity GNSS Cold start Autonomous 146 dBm Reacquisiti...

Page 71: ...cold start command 4 3 Layout Guidelines The following layout guidelines should be taken into account in customers designs Maximize the distance among GNSS antenna main antenna and Rx diversity antenna Digital circuits such as U SIM card USB interface camera module and display connector should be kept away from the antennas Use ground vias around the GNSS trace and sensitive analog signal traces t...

Page 72: ...ity Antenna Interfaces 5 1 1 Pin Definition The pin definition of main antenna and Rx diversity antenna interfaces is shown below Table 26 Pin Definition of RF Antennas 5 1 2 Operating Frequency Table 27 Module Operating Frequencies Pin Name Pin No I O Description Comment ANT_MAIN 49 IO Main antenna 50Ω impedance ANT_DIV 35 AI Receive diversity antenna 50Ω impedance If unused keep it open 3GPP Ban...

Page 73: ...85 1805 1880 MHz LTE FDD B4 1710 1755 2110 2155 MHz LTE FDD B5 824 849 869 894 MHz LTE FDD B7 2500 2570 2620 2690 MHz LTE FDD B8 880 915 925 960 MHz LTE FDD B12 699 716 729 746 MHz LTE FDD B13 777 787 746 756 MHz LTE FDD B14 788 798 758 768 MHZ LTE FDD B18 815 830 860 875 MHz LTE FDD B19 830 845 875 890 MHz LTE FDD B20 832 862 791 821 MHz LTE FDD B26 814 849 859 894 MHz LTE FDD B28 703 748 758 803...

Page 74: ...used to disable receive diversity Please refer to document 2 for details 3 Place the π type matching components R1 C1 C2 R2 C3 C4 as close to the antenna as possible 5 1 4 Reference Design of RF Layout For user s PCB the characteristic impedance of all RF traces should be controlled as 50Ω The impedance of the RF traces is usually determined by the trace width W the materials dielectric constant h...

Page 75: ... EC25 Hardware Design EC25_Hardware_Design 74 130 Figure 34 Microstrip Design on a 2 layer PCB Figure 35 Coplanar Waveguide Design on a 2 layer PCB Figure 36 Coplanar Waveguide Design on a 4 layer PCB Layer 3 as Reference Ground ...

Page 76: ...and all the right angle traces should be changed to curved ones There should be clearance area under the signal pin of the antenna connector or solder joint The reference ground of RF traces should be complete Meanwhile adding some ground vias around RF traces and the reference ground could help to improve RF performance The distance between the ground vias and RF traces should be no less than two...

Page 77: ... 38 Reference Circuit of GNSS Antenna 1 An external LDO can be selected to supply power according to the active antenna requirement 2 If the module is designed with a passive antenna then the VDD circuit is not needed Type Frequency Unit GPS 1575 42 1 023 MHz GLONASS 1597 5 1605 8 MHz Galileo 1575 42 2 046 MHz BeiDou 1561 098 2 046 MHz QZSS 1575 42 MHz NOTES ...

Page 78: ...ics which will affect the GNSS performance Type Requirements GNSS1 Frequency range 1559MHz 1609MHz Polarization RHCP or linear VSWR 2 Typ Passive antenna gain 0dBi Active antenna noise figure 1 5dB Active antenna gain 0dBi Active antenna embedded LNA gain 17dB GSM WCDMA LTE VSWR 2 Efficiency 30 Max input power 50W Input impedance 50Ω Cable insertion loss 1dB GSM850 EGSM900 WCDMA B5 B6 B8 B19 LTE F...

Page 79: ... Installation If RF connector is used for antenna connection it is recommended to use U FL R SMT connector provided by Hirose Figure 39 Dimensions of the U FL R SMT Connector Unit mm U FL LP serial connectors listed in the following figure can be used to match the U FL R SMT Figure 40 Mechanicals of U FL LP Connectors ...

Page 80: ...Series EC25 Hardware Design EC25_Hardware_Design 79 130 The following figure describes the space factor of mated connector Figure 41 Space Factor of Mated Connector Unit mm For more details please visit http www hirose com ...

Page 81: ...mum ratings for power supply and voltage on digital and analog pins of the module are listed in the following table Table 31 Absolute Maximum Ratings Parameter Min Max Unit VBAT_RF VBAT_BB 0 3 4 7 V USB_VBUS 0 3 5 5 V Peak Current of VBAT_BB 0 0 8 A Peak Current of VBAT_RF 0 1 8 A Voltage at Digital Pins 0 3 2 3 V Voltage at ADC0 0 VBAT_BB V Voltage at ADC1 0 VBAT_BB V ...

Page 82: ...mergency call is not supported on ThreadX modules etc There is no unrecoverable malfunction There are also no effects on radio spectrum Parameter Description Conditions Min Typ Max Unit VBAT VBAT_BB and VBAT_RF The actual input voltages must be kept between the minimum and maximum values 3 3 3 8 4 3 V Voltage drop during burst transmission Maximum power control level on EGSM900 400 mV IVBAT Peak s...

Page 83: ...umption Parameter Description Conditions Typ Unit IVBAT OFF state Power down 11 uA Sleep state AT CFUN 0 USB disconnected 1 16 mA GSM DRX 2 USB disconnected 2 74 mA GSM DRX 9 USB disconnected 2 00 mA WCDMA PF 64 USB disconnected 2 15 mA WCDMA PF 128 USB disconnected 1 67 mA LTE FDD PF 64 USB disconnected 2 60 mA LTE FDD PF 128 USB disconnected 1 90 mA LTE TDD PF 64 USB disconnected 2 79 mA LTE TDD...

Page 84: ...L 29 48dBm 539 0 mA EDGE data transfer GNSS OFF EGSM900 4DL 1UL PCL 8 27 40dBm 174 0 mA EGSM900 3DL 2UL PCL 8 27 24dBm 281 0 mA EGSM900 2DL 3UL PCL 8 27 11dBm 379 0 mA EGSM900 1DL 4UL PCL 8 26 99dBm 480 0 mA DCS1800 4DL 1UL PCL 2 25 82dBm 159 0 mA DCS1800 3DL 2UL PCL 2 25 85dBm 251 0 mA DCS1800 2DL 3UL PCL 2 25 68dBm 340 0 mA DCS1800 1DL 4UL PCL 2 25 57dBm 433 0 mA WCDMA data transfer GNSS OFF WCD...

Page 85: ...GSM voice call EGSM900 PCL 5 33 08dBm 264 0 mA DCS1800 PCL 0 29 75dBm 190 0 mA WCDMA voice call WCDMA B1 23 22dBm 680 0 mA WCDMA B5 23 18dBm 677 0 mA WCDMA B8 23 54dBm 618 0 mA Parameter Description Conditions Typ Unit IVBAT OFF state Power down 10 uA Sleep state AT CFUN 0 USB disconnected 1 1 mA WCDMA PF 64 USB disconnected 1 8 mA WCDMA PF 128 USB disconnected 1 5 mA LTE FDD PF 64 USB disconnecte...

Page 86: ...E data transfer GNSS OFF LTE FDD B2 22 93dBm 715 0 mA LTE FDD B4 22 96dBm 738 0 mA LTE FDD B12 23 35dBm 663 0 mA WCDMA voice call WCDMA B2 22 93dBm 646 0 mA WCDMA B4 23dBm 572 0 mA WCDMA B5 23 78dBm 549 0 mA Parameter Description Conditions Typ Unit IVBAT OFF state Power down 10 uA Sleep state AT CFUN 0 USB disconnected 0 85 mA LTE FDD PF 64 USB disconnected 2 0 mA LTE FDD PF 128 USB disconnected ...

Page 87: ...ted 4 1 mA Idle state WCDMA PF 64 USB disconnected 29 6 mA WCDMA PF 64 USB connected 42 7 mA LTE FDD PF 64 USB disconnected 29 8 mA LTE FDD PF 64 USB connected 41 3 mA LTE TDD PF 64 USB disconnected 29 9 mA LTE TDD PF 64 USB connected 42 7 mA WCDMA data transfer GNSS OFF WCDMA B1 HSDPA 22 30dBm 823 4 mA WCDMA B1 HSUPA 21 98dBm 835 2 mA WCDMA B6 HSDPA 22 32dBm 616 6 mA WCDMA B6 HSUPA 21 78dBm 621 6...

Page 88: ...735 4 mA WCDMA B19 22 99dBm 664 8 mA Parameter Description Conditions Typ Unit IVBAT OFF state Power down 11 uA Sleep state AT CFUN 0 1 3 mA AT CFUN 0 USB disconnected 1 46 mA GSM850 DRX 5 USB disconnected 1 8 mA EGSM900 DRX 5 USB disconnected 2 0 mA DCS1800 DRX 5 USB disconnected 1 9 mA PCS1900 DRX 5 USB disconnected 1 9 mA WCDMA PF 64 USB disconnected 2 0 mA WCDMA PF 128 USB disconnected 1 6 mA ...

Page 89: ...A GSM850 3UL 2DL 30 28dBm 441 0 mA GSM850 4UL 1DL 29 09dBm 511 0 mA EGSM900 1UL 4DL 32 34dBm 241 0 mA EGSM900 2UL 3DL 32 19dBm 397 0 mA EGSM900 3UL 2DL 30 17dBm 459 0 mA EGSM900 4UL 1DL 28 96dBm 533 0 mA DCS1800 1UL 4DL 29 71dBm 183 0 mA DCS1800 2UL 3DL 29 62dBm 289 0 mA DCS1800 3UL 2DL 29 49dBm 392 0 mA DCS1800 4UL 1DL 29 32dBm 495 0 mA PCS1900 1UL 4DL 29 61dBm 174 0 mA PCS1900 2UL 3DL 29 48dBm 2...

Page 90: ...5 0 mA PCS1900 1UL 4DL 25 65dBm 148 0 mA PCS1900 2UL 3DL 25 63dBm 232 0 mA PCS1900 3UL 2DL 25 54dBm 313 0 mA PCS1900 4UL 1DL 25 26dBm 401 0 mA WCDMA data transfer GNSS OFF WCDMA B1 HSDPA 22 34dBm 625 0 mA WCDMA B1 HSUPA 21 75dBm 617 0 mA WCDMA B2 HSDPA 22 51dBm 610 0 mA WCDMA B2 HSUPA 22 14dBm 594 0 mA WCDMA B5 HSDPA 22 98dBm 576 0 mA WCDMA B5 HSUPA 22 89dBm 589 0 mA WCDMA B8 HSDPA 22 31dBm 556 0 ...

Page 91: ... PCL0 29 82dBm 170 0 mA WCDMA voice call WCDMA B1 23 27dBm 687 0 mA WCDMA B2 23 38dBm 668 0 mA WCDMA B5 23 38dBm 592 0 mA WCDMA B8 23 32dBm 595 0 mA Parameter Description Conditions Typ Unit IVBAT OFF state Power down 10 uA Sleep state AT CFUN 0 USB disconnected 1 0 mA WCDMA PF 64 USB disconnected 1 9 mA WCDMA PF 128 USB disconnected 1 5 mA LTE FDD PF 64 USB disconnected 2 3 mA LTE FDD PF 128 USB ...

Page 92: ...TE FDD B7 23 08dBm 692 0 mA LTE FDD B28A 23 37dBm 752 0 mA LTE FDD B28B 23 48dBm 770 0 mA WCDMA voice call WCDMA B1 23 22dBm 546 0 mA WCDMA B5 23 01dBm 511 0 mA Parameter Description Conditions Typ Unit IVBAT OFF state Power down 10 uA Sleep state AT CFUN 0 USB disconnected 1 0 mA WCDMA PF 64 USB disconnected 1 8 mA WCDMA PF 128 USB disconnected 1 4 mA LTE FDD PF 64 USB disconnected 2 2 mA LTE FDD...

Page 93: ... LTE FDD B2 22 92dBm 698 0 mA LTE FDD B4 23 12dBm 710 0 mA LTE FDD B5 22 98dBm 650 0 mA LTE FDD B12 23 42dBm 648 0 mA LTE FDD B13 22 92dBm 690 0 mA LTE FDD B14 23 42dBm 685 0 mA LTE FDD B66 23 35dBm 715 0 mA LTE FDD B71 23 39dBm 689 0 mA WCDMA voice call WCDMA B2 23 59dBm 585 0 mA WCDMA B4 23 47dBm 610 0 mA WCDMA B5 23 46dBm 605 0 mA Parameter Description Conditions Typ Unit IVBAT OFF state Power ...

Page 94: ...A LTE FDD PF 64 USB connected 34 8 mA WCDMA data transfer GNSS OFF WCDMA B2 HSDPA 22 1dBm 548 0 mA WCDMA B2 HSUPA 22 28dBm 545 0 mA WCDMA B4 HSDPA 22 2dBm 580 0 mA WCDMA B4 HSUPA 22 2dBm 596 0 mA WCDMA B5 HSDPA 22 1dBm 498 0 mA WCDMA B5 HSUPA 22 0dBm 500 0 mA LTE data transfer GNSS OFF LTE FDD B2 23 36dBm 621 0 mA LTE FDD B4 22 7dBm 702 0 mA LTE FDD B5 22 7dBm 564 0 mA LTE FDD B12 22 66dBm 648 0 m...

Page 95: ...d 1 67 mA LTE FDD PF 64 USB disconnected 2 60 mA LTE FDD PF 128 USB disconnected 1 90 mA LTE TDD PF 64 USB disconnected 2 79 mA LTE TDD PF 128 USB disconnected 2 00 mA Idle state GSM DRX 5 USB disconnected 19 5 mA GSM DRX 5 USB connected 29 5 mA WCDMA PF 64 USB disconnected 21 0 mA WCDMA PF 64 USB connected 31 0 mA LTE FDD PF 64 USB disconnected 20 7 mA LTE FDD PF 64 USB connected 30 8 mA LTE TDD ...

Page 96: ...PCL 8 22 36dBm 348 0 mA DCS1800 4DL 1UL PCL 2 25 59dBm 136 0 mA DCS1800 3DL 2UL PCL 2 24 54dBm 225 0 mA DCS1800 2DL 3UL PCL 2 22 38dBm 300 0 mA DCS1800 1DL 4UL PCL 2 21 24dBm 379 0 mA WCDMA data transfer GNSS OFF WCDMA B1 HSDPA 22 93dBm 504 0 mA WCDMA B1 HSUPA 22 62dBm 512 0 mA WCDMA B8 HSDPA 22 88dBm 562 0 mA WCDMA B8 HSUPA 22 14dBm 535 0 mA LTE data transfer GNSS OFF LTE FDD B1 23 6dBm 664 0 mA ...

Page 97: ... disconnected 1 0 mA GSM DRX 2 USB disconnected 2 0 mA GSM DRX 9 USB disconnected 1 3 mA WCDMA PF 64 USB disconnected 2 1 mA WCDMA PF 128 USB disconnected 1 7 mA LTE FDD PF 64 USB disconnected 2 3 mA LTE FDD PF 128 USB disconnected 1 8 mA Idle state GSM DRX 5 USB disconnected 17 3 mA GSM DRX 5 USB connected 28 3 mA WCDMA PF 64 USB disconnected 17 1 mA WCDMA PF 64 USB connected 27 2 mA LTE FDD PF 6...

Page 98: ...Bm 509 0 mA DCS1800 4DL 1UL PCL 2 25 72dBm 134 0 mA DCS1800 3DL 2UL PCL 2 24 86dBm 211 0 mA DCS1800 2DL 3UL PCL 2 25 59dBm 312 0 mA DCS1800 1DL 4UL PCL 2 25 39dBm 299 0 mA WCDMA data transfer GNSS OFF WCDMA B1 HSDPA 22 54dBm 567 0 mA WCDMA B1 HSUPA 22 45dBm 574 3 mA WCDMA B8 HSDPA 22 42dBm 481 9 mA WCDMA B8 HSUPA 21 91dBm 463 0 mA LTE data transfer GNSS OFF LTE FDD B1 22 55dBm 752 0 mA LTE FDD B3 ...

Page 99: ...ected 1 3 mA LTE FDD PF 64 USB disconnected 2 2 mA LTE FDD PF 128 USB disconnected 1 6 mA LTE TDD PF 64 USB disconnected 2 2 mA LTE TDD PF 128 USB disconnected 1 6 mA Idle state GSM DRX 5 USB disconnected 14 5 mA GSM DRX 5 USB connected 34 3 mA WCDMA PF 64 USB disconnected 14 7 mA WCDMA PF 64 USB connected 35 3 mA LTE FDD PF 64 USB disconnected 15 0 mA LTE FDD PF 64 USB connected 36 5 mA LTE TDD P...

Page 100: ...L PCL 8 23 35dBm 494 7 mA DCS1800 4DL 1UL PCL 2 25 92dBm 134 5 mA DCS1800 3DL 2UL PCL 2 25 63dBm 222 9 mA DCS1800 2DL 3UL PCL 2 23 14dBm 301 2 mA DCS1800 1DL 4UL PCL 2 22 60dBm 391 8 mA WCDMA data transfer GNSS OFF WCDMA B1 HSDPA 22 01dBm 534 8 mA WCDMA B1 HSUPA 21 38dBm 526 7 mA WCDMA B8 HSDPA 22 21dBm 459 8 mA WCDMA B8 HSUPA 21 85dBm 471 6 mA LTE data transfer GNSS OFF LTE FDD B1 23 38dBm 743 4 ...

Page 101: ... USB disconnected 1 0 mA WCDMA PF 64 USB disconnected 2 3 mA WCDMA PF 128 USB disconnected 1 7 mA LTE FDD PF 64 USB disconnected 2 5 mA LTE FDD PF 128 USB disconnected 2 2 mA Idle state WCDMA PF 64 USB disconnected 12 9 mA WCDMA PF 64 USB connected 32 0 mA LTE FDD PF 64 USB disconnected 13 7 mA LTE FDD PF 64 USB connected 32 6 mA WCDMA data transfer GNSS OFF WCDMA B2 HSDPA 22 27dBm 581 9 mA WCDMA ...

Page 102: ... Parameter Description Conditions Typ Unit IVBAT OFF state Power down 9 uA Sleep state AT CFUN 0 USB disconnected 0 9 mA GSM DRX 2 USB disconnected 2 4 mA LTE FDD PF 128 USB disconnected 2 5 mA LTE TDD PF 64 USB disconnected 3 4 mA Idle state GSM DRX 5 USB disconnected 16 9 mA GSM DRX 5 USB connected 34 5 mA WCDMA PF 64 USB disconnected 17 9 mA WCDMA PF 64 USB connected 35 2 mA LTE FDD PF 64 USB d...

Page 103: ... 47dBm 235 7 mA DCS1800 2DL 3UL 26 29dBm 292 2 mA DCS1800 1DL 4UL 25 26dBm 363 8 mA PCS1900 4DL 1UL 29 44dBm 162 9 mA PCS1900 3DL 2UL 28 59dBm 246 8 mA PCS1900 2DL 3UL 26 51dBm 300 6 mA PCS1900 1DL 4UL 25 34dBm 370 5 mA EDGE data transfer GNSS OFF GSM850 4DL 1UL 26 94dBm 177 5 mA GSM850 3DL 2UL 25 90dBm 290 8 mA GSM850 2DL 3UL 23 70dBm 394 0 mA GSM850 1DL 4UL 22 47dBm 504 5 mA EGSM900 4DL 1UL 27 1...

Page 104: ...Bm 541 3 mA WCDMA B2 HSDPA 21 60dBm 572 9 mA WCDMA B2 HSUPA 22 06dBm 560 0 mA WCDMA B4 HSDPA 22 97dBm 495 8 mA WCDMA B4 HSUPA 23 20dBm 512 4 mA WCDMA B5 HSDPA 22 63dBm 493 1 mA WCDMA B5 HSUPA 22 98dBm 504 7 mA WCDMA B8 HSDPA 22 46dBm 545 5 mA WCDMA B8 HSUPA 21 89dBm 541 1 mA LTE data transfer GNSS OFF LTE FDD B1 22 91dBm 713 5 mA LTE FDD B2 22 85dBm 713 4 mA LTE FDD B3 23 12dBm 675 7 mA LTE FDD B4...

Page 105: ...1800 PCL0 29 38dBm 153 0 mA PCS1900 PCL0 29 47dBm 160 3 mA WCDMA voice call WCDMA B1 23 13dBm 568 9 mA WCDMA B2 22 99dBm 628 4 mA WCDMA B4 22 90dBm 506 3 mA WCDMA B5 23 10dBm 507 5 mA WCDMA B8 22 90dBm 581 5 mA Parameter Description Conditions Typ Unit IVBAT GNSS Searching AT CFUN 0 Cold start Passive Antenna 54 0 mA Lost state Passive Antenna 53 9 mA Tracking AT CFUN 0 Instrument Environment 30 5...

Page 106: ...Sensitivity DCS1800 PCS1900 30dBm 2dB 0dBm 5dB GSM850 EGSM900 8 PSK 27dBm 3dB 5dBm 5dB DCS1800 PCS1900 8 PSK 26dBm 3dB 0dBm 5dB WCDMA bands 24dBm 1 3dB 49dBm LTE FDD bands 23dBm 2dB 39dBm LTE TDD bands 23dBm 2dB 39dBm Frequency Primary Diversity SIMO1 3GPP SIMO EGSM900 109 0dBm 102 0dBm DCS1800 109 0dBm 102 0dbm WCDMA B1 110 5dBm 106 7dBm WCDMA B5 110 5dBm 104 7dBm WCDMA B8 110 5dBm 103 7dBm LTE F...

Page 107: ... 101 0dBm 96 3dBm LTE TDD B41 10MHz 94 5dBm 97 0dBm 98 5dBm 94 3dBm Frequency Primary Diversity SIMO1 3GPP SIMO WCDMA B2 110 0dBm 104 7dBm WCDMA B4 110 0dBm 106 7dBm WCDMA B5 110 5dBm 104 7dBm LTE FDD B2 10MHz 98 0dBm 98 0dBm 101 0dBm 94 3dBm LTE FDD B4 10MHz 97 5dBm 99 0dBm 101 0dBm 96 3dBm LTE FDD B12 10MHz 97 2dBm 98 0dBm 101 0dBm 93 3dBm Frequency Primary Diversity SIMO1 3GPP SIMO LTE FDD B4 1...

Page 108: ...01 5dBm 93 8dBm LTE TDD B41 10MHz 95 0dBm 95 7dBm 99 0dBm 94 3dBm Frequency Primary Diversity SIMO1 3GPP SIMO GSM850 109 0dBm 102 0dBm EGSM900 109 0dBm 102 0dBm DCS1800 109 0dBm 102 0dBm PCS1900 109 0dBm 102 0dBm WCDMA B1 110 0dBm 109dBm 112dBm 106 7dBm WCDMA B2 110 0dBm 104 7dBm WCDMA B5 111 0dBm 112dBm 113dBm 104 7dBm WCDMA B8 111 0dBm 111dBm 113dBm 103 7dBm LTE FDD B1 10MHz 97 2dBm 97 5dBm 100 ...

Page 109: ...dBm 99 0dBm 102 0dBm 94 8dBm Table 55 EC25 AUTL Conducted RF Receiving Sensitivity Table 56 EC25 AF Conducted RF Receiving Sensitivity LTE FDD B8 10MHz 99 2dBm 98 2dBm 102 2dBm 93 3dBm LTE FDD B28 10MHz 98 6dBm 98 7dBm 102 0dBm 94 8dBm LTE TDD B40 10MHz 97 2dBm 98 4dBm 101 2dBm 96 3dBm Frequency Primary Diversity SIMO1 3GPP SIMO LTE FDD B3 10MHz 98 0dBm 97 0dBm 100 0dBm 93 3dBm LTE FDD B7 10MHz 97...

Page 110: ...97 5dBm 98 5dBm 99 6dBm 95 8dBm LTE FDD B71 10MHz 98 6dBm 99 5dBm 100dBm 93 5dBm Frequency Primary Diversity SIMO1 3GPP SIMO WCDMA B2 109 5dBm 110dBm 110 4dBm 104 7dBm WCDMA B4 109 6dBm 110dBm 110 6dBm 106 7dBm WCDMA B5 110dBm 110dBm 110 7dBm 104 7dBm LTE FDD B2 10MHz 98 0dBm 98 5dBm 100 5dBm 94 3dBm LTE FDD B4 10MHz 97 5dBm 98 2dBm 99 5dBm 96 3dBm LTE FDD B5 10MHz 98 0dBm 98 5dBm 100 5dBm 94 3dBm...

Page 111: ... FDD B7 10MHz 96 7dBm 98 5dBm 100 7dBm 94 3dBm LTE FDD B8 10MHz 98 5dBm 100 4dBm 102 4dBm 93 3dBm LTE FDD B20 10MHz 98 7dBm 100 2dBm 102 7dBm 93 3dBm LTE FDD B28 10MHz 98 7dBm 100 5dBm 102 5dBm 94 8dBm LTE TDD B38 10MHz 95 2dBm 97 0dBm 100 2dBm 96 3dBm LTE TDD B40 10MHz 95 7dBm 98 2dBm 101 2dBm 96 3dBm LTE TDD B41 10MHz 95 0dBm 97 1dBm 100 2dBm 94 3dBm Frequency Primary Diversity SIMO1 3GPP SIMO E...

Page 112: ...B1 110 5dBm 106 7dBm WCDMA B8 110 5dBm 103 7dBm LTE FDD B1 10MHz 98 0dBm 98 0dBm 101dBm 96 3dBm LTE FDD B3 10MHz 96 5dBm 98 5dBm 99 5dBm 93 3dBm LTE FDD B7 10MHz 97 0dBm 94 5dBm 99 5dBm 94 3dBm LTE FDD B8 10MHz 97 0dBm 97 0dBm 100 0dBm 93 3dBm LTE FDD B20 10MHz 97 5dBm 99 0dBm 101 5dBm 93 3dBm LTE FDD B28 10MHz 98 6dBm 98 7dBm 101 0dBm 94 8dBm LTE TDD B38 10MHz 96 3dBm 97dBm 98 5dBm 96 3dBm LTE TD...

Page 113: ...ty SIMO1 3GPP SIMO GSM850 109 0dBm 102 0dBm EGSM900 109 0dBm 102 0dBm DCS1800 109 0dBm 102 0dBm PCS1900 109 0dBm 102 0dBm WCDMA B1 110 0dBm 109 5dBm 112dBm 106 7dBm WCDMA B2 110 5dBm 104 7dBm WCDMA B4 110 0dBm 110dBm 112dBm 104 7dBm WCDMA B5 111 0dBm 112dBm 113dBm 104 7dBm WCDMA B8 111 0dBm 112dBm 113dBm 103 7dBm LTE FDD B1 10MHz 98 0dBm 97 7dBm 101 2dBm 96 3dBm LTE FDD B2 10MHz 98 5dBm 94 3dBm LT...

Page 114: ... electrostatics discharge characteristics Table 63 Electrostatics Discharge Characteristics 25ºC 45 Relative Humidity 6 8 Thermal Consideration In order to achieve better performance of the module it is recommended to comply with the following principles for thermal consideration On customers PCB design please keep placement of the module away from heating sources especially high power components ...

Page 115: ...s application demands the heatsink can be mounted on the top of the module or the opposite side of the PCB area where the module is mounted or both of them The heatsink should be designed with as many fins as possible to increase heat dissipation area Meanwhile a thermal pad with high thermal conductivity should be used between the heatsink and module PCB The following shows two kinds of heatsink ...

Page 116: ...c When the maximum BB chip temperature reaches or exceeds 115 C the module will disconnect from the network and it will recover to network connected state after the maximum temperature falls below 115 C Therefore the thermal design should be maximally optimized to make sure the maximum BB chip temperature always maintains below 105 C Customers can execute AT QTEMP command and get the maximum BB ch...

Page 117: ... Dimensions This chapter describes the mechanical dimensions of the module All dimensions are measured in mm and the dimensional tolerances are 0 05mm unless otherwise specified 7 1 Mechanical Dimensions of the Module 32 0 0 15 29 0 0 15 0 8 2 4 0 2 Figure 44 Module Top and Side Dimensions ...

Page 118: ...are_Design 117 130 3 85 2 0 2 0 3 0 3 5 0 8 1 5 3 2 3 4 3 2 3 4 3 2 6 8 3 45 29 0 0 15 1 90 3 5 1 9 32 0 0 15 3 4 2 8 4 8 0 87 5 96 1 6 2 49 2 4 2 15 4 37 1 7 4 82 1 8 1 8 1 15 1 05 1 30 1 30 1 1 1 1 2 0 3 0 Pin 1 Figure 45 Module Bottom Dimensions Bottom View ...

Page 119: ..._Hardware_Design 118 130 7 2 Recommended Footprint Figure 46 Recommended Footprint Top View 1 The keepout area should not be designed 2 For easy maintenance of the module please keep about 3mm between the module and other components in the host PCB NOTES ...

Page 120: ...ardware_Design 119 130 7 3 Design Effect Drawings of the Module Figure 47 Top View of the Module Figure 48 Bottom View of the Module These are renderings of EC25 module For authentic appearance please refer to the module that you receive from Quectel NOTE ...

Page 121: ...t the factory environment of 30ºC 60 RH Stored at 10 RH 3 Devices require baking before mounting if any circumstances below occurs When the ambient temperature is 23ºC 5ºC and the humidity indicator card shows the humidity is 10 before opening the vacuum sealed bag Device mounting cannot be finished within 168 hours at factory conditions of 30ºC 60 RH 4 If baking is required devices may be baked f...

Page 122: ...ed that the peak reflow temperature is 238ºC 245ºC and the absolute maximum reflow temperature is 245ºC To avoid damage to the module caused by repeated heating it is strongly recommended that the module should be mounted after reflow soldering for the other side of PCB has been completed The recommended reflow soldering thermal profile lead free reflow soldering and related parameters are shown b...

Page 123: ...pcs modules The figure below shows the package details measured in mm 30 3 0 15 29 3 0 15 30 3 0 15 32 5 0 15 33 5 0 15 0 35 0 05 4 2 0 15 3 1 0 15 32 5 0 15 33 5 0 15 4 00 0 1 2 00 0 1 1 75 0 1 20 20 0 15 44 00 0 3 44 00 0 1 1 50 0 1 Max slope 2 3 C sec Reflow time D over 220 C 40 60sec Max temperature 238 245 C Cooling down slope 1 4 C sec Reflow Cycle Max reflow cycle 1 ...

Page 124: ... Design EC25_Hardware_Design 123 130 D i r e c t i o n o f f e e d C o v e r t a p e 13 100 44 5 0 20 0 00 48 5 Figure 50 Tape and Reel Specifications Carrier tape packing module Carrier tape unfolding 1083 Figure 51 Tape and Reel Directions ...

Page 125: ...les 3 Quectel_EC2x EGxx EM05_GNSS_AT_Commands _Manual GNSS AT Commands Manual for EC25 EC21 EC20 R2 0 EC20 R2 1 EG95 EG91 EG25 G and EM05 modules 4 Quectel_Module_Secondary_SMT_User_Guide Module secondary SMT user guide 5 Quectel_EC25_Reference_Design EC25 reference design 6 Quectel_RF_Layout_Application_Note RF layout application note 7 Quectel_LTE_Module_Thermal_Design_Guide Thermal design guide...

Page 126: ... FDD Frequency Division Duplex FR Full Rate GLONASS GLObalnaya NAvigatsionnaya Sputnikovaya Sistema the Russian Global Navigation Satellite System GMSK Gaussian Minimum Shift Keying GNSS Global Navigation Satellite System GPS Global Positioning System GSM Global System for Mobile Communications HR Half Rate HSPA High Speed Packet Access HSDPA High Speed Downlink Packet Access HSUPA High Speed Upli...

Page 127: ...on QPSK Quadrature Phase Shift Keying RF Radio Frequency RHCP Right Hand Circularly Polarized Rx Receive SGMII Serial Gigabit Media Independent Interface SIM Subscriber Identification Module SIMO Single Input Multiple Output SMS Short Message Service TDD Time Division Duplexing TDMA Time Division Multiple Access TD SCDMA Time Division Synchronous Code Division Multiple Access TX Transmitting Direc...

Page 128: ...imum Input Low Level Voltage Value VILmin Minimum Input Low Level Voltage Value VImax Absolute Maximum Input Voltage Value VImin Absolute Minimum Input Voltage Value VOHmax Maximum Output High Level Voltage Value VOHmin Minimum Output High Level Voltage Value VOLmax Maximum Output Low Level Voltage Value VOLmin Minimum Output Low Level Voltage Value VSWR Voltage Standing Wave Ratio WCDMA Wideband ...

Page 129: ...g Schemes Table 67 Description of Different Coding Schemes Scheme CS 1 CS 2 CS 3 CS 4 Code Rate 1 2 2 3 3 4 1 USF 3 3 3 3 Pre coded USF 3 6 6 12 Radio Block excl USF and BCS 181 268 312 428 BCS 40 16 16 16 Tail 4 4 4 Coded Bits 456 588 676 456 Punctured Bits 0 132 220 Data Rate Kb s 9 05 13 4 15 6 21 4 ...

Page 130: ...2 2 the first number indicates the amount of downlink timeslots while the second number indicates the amount of uplink timeslots The active slots determine the total number of slots the GPRS device can use simultaneously for both uplink and downlink communications The description of different multi slot classes is shown in the following table Table 68 GPRS Multi slot Classes Multislot Class Downli...

Page 131: ...5 Hardware Design EC25_Hardware_Design 130 130 15 5 5 NA 16 6 6 NA 17 7 7 NA 18 8 8 NA 19 6 2 NA 20 6 3 NA 21 6 4 NA 22 6 4 NA 23 6 6 NA 24 8 2 NA 25 8 3 NA 26 8 4 NA 27 8 4 NA 28 8 6 NA 29 8 8 NA 30 5 1 6 31 5 2 6 32 5 3 6 33 5 4 6 ...

Page 132: ... 2 GMSK 13 4kbps 26 8kbps 53 6kbps CS 3 GMSK 15 6kbps 31 2kbps 62 4kbps CS 4 GMSK 21 4kbps 42 8kbps 85 6kbps MCS 1 GMSK C 8 80kbps 17 60kbps 35 20kbps MCS 2 GMSK B 11 2kbps 22 4kbps 44 8kbps MCS 3 GMSK A 14 8kbps 29 6kbps 59 2kbps MCS 4 GMSK C 17 6kbps 35 2kbps 70 4kbps MCS 5 8 PSK B 22 4kbps 44 8kbps 89 6kbps MCS 6 8 PSK A 29 6kbps 59 2kbps 118 4kbps MCS 7 8 PSK B 44 8kbps 89 6kbps 179 2kbps MCS ...

Page 133: ... user s body and must not transmit simultaneously with any other antenna or transmitter 3 A label with the following statements must be attached to the host end product This device contains FCC ID XMR202006EC25AUX 4 To comply with FCC regulations limiting both maximum RF output power and human exposure to RF radiation maximum antenna gain including cable loss must not exceed GSM850 8 571dBi GSM190...

Page 134: ...odular with a standard fixed label if 1 the module s FCC ID is not visible when installed in the host or 2 if the host is marketed so that end users do not have straightforward commonly used methods for access to remove the module so that the FCC ID of the module is visible then an additional permanent label referring to the enclosed module Contains Transmitter Module FCC ID XMR202006EC25AUX or Co...

Page 135: ...ce complies with part 15 of the FCC Rules Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation Changes or modifications not expressly approved by the manufacturer could void the user s authority to operate the equipment ...

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