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Quectel EC21 Mini PCIe Series, Hardware Design

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Quectel EC21 Mini PCIe Series Hardware Design Download Page 43

                                                                                                                                             

LTE  Standard  Module  Series 

                                                                                                                      EC21  Mini  PCIe  Hardware  Design

 

 

EC21_Mini_PCIe_Hardware_Design                                                                                                        42 / 67 

 
 

 

6

 

Electrical, Reliability and Radio 

Characteristics 

 

6.1. General Description 

 

This chapter mainly describes the following electrical and radio characteristics of EC21 Mini PCIe:   

 

 

Power supply requirements 

 

I/O requirements 

 

RF characteristics 

 

GNSS receiver 

 

ESD characteristics 

 

Current consumption 

 

Thermal consideration 

 

6.2. Power Supply Requirements 

 

The input voltage of EC21 Mini PCIe is 3.0V~3.6V, as specified by 

PCI Express Mini CEM Specifications 

1.2

. The following table shows the power supply requirements of EC21 Mini PCIe. 

 

Table 20: Power Supply Requirements 

 

 

 

 

 

 

 

 

Parameter 

Description 

Min.

 

Typ. 

Max. 

Unit 

VCC_3V3 

Power Supply 

3.0 

3.3 

3.6 

V 

Summary of Contents for EC21 Mini PCIe Series

Page 1: ...EC21 Mini PCIe Hardware Design LTE Standard Module Series Rev EC21_Mini_PCIe_Hardware_Design_V1 4 Date 2019 11 26 Status Released www quectel com...

Page 2: ...CUSTOMERS 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...

Page 3: ...in Table 16 6 Updated conducted RF receiving sensitivity of EC21 A in Table 18 7 Added conducted RF receiving sensitivity of EC21 KL in Table 21 8 Added conducted RF receiving sensitivity of EC21 J in...

Page 4: ...PCIe in Table 27 19 Added conducted RF receiving sensitivity of EC21 EU Mini PCIe in Table 28 20 Added conducted RF receiving sensitivity of EC21 EC Mini PCIe in Table 29 21 Added current consumption...

Page 5: ...use the baseline has been updated 2 Updated the supported protocols and USB serial drivers in Table 2 3 Added operating modes of module in Chapter 3 3 4 Updated description of W_DISABLE in Chapter 3 1...

Page 6: ...ating Modes 22 3 2 Power Saving 23 3 2 1 Sleep Mode 23 3 2 2 Airplane Mode 23 3 3 Power Supply 23 3 4 U SIM Interface 24 3 5 USB Interface 26 3 6 UART Interface 28 3 7 PCM and I2C Interfaces 29 3 8 Co...

Page 7: ...6 2 Power Supply Requirements 42 6 3 I O Requirements 43 6 4 RF Characteristics 43 6 5 ESD Characteristics 49 6 6 Current Consumption 49 6 7 Thermal Consideration 60 7 Dimensions and Packaging 62 7 1...

Page 8: ...S 43 TABLE 22 CONDUCTED RF OUTPUT POWER OF EC21 MINI PCIE 43 TABLE 23 CONDUCTED RF RECEIVING SENSITIVITY OF EC21 E MINI PCIE 44 TABLE 24 CONDUCTED RF RECEIVING SENSITIVITY OF EC21 A MINI PCIE 44 TABLE...

Page 9: ...LTE Standard Module Series EC21 Mini PCIe Hardware Design EC21_Mini_PCIe_Hardware_Design 8 67 TABLE 42 RELATED DOCUMENTS 65 TABLE 43 TERMS AND ABBREVIATIONS 65...

Page 10: ...FIGURE 8 TIMING IN PRIMARY MODE 30 FIGURE 9 TIMING IN AUXILIARY MODE 30 FIGURE 10 REFERENCE CIRCUIT OF PCM APPLICATION WITH AUDIO CODEC 31 FIGURE 11 RI BEHAVIORS 32 FIGURE 12 TIMING OF RESETTING MODUL...

Page 11: ...customers applications This document helps customers quickly understand module interface specifications electrical characteristics mechanical specifications and other related information of the module...

Page 12: ...ircraft 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...

Page 13: ...tems such as Linux Android etc and also provides audio high speed data transmission and GNSS functionalities for customers applications EC21 Mini PCIe module can be applied in the following fields PDA...

Page 14: ...receive diversity Support GNSS1 Support digital audio2 EC21 V Mini PCIe Support LTE FDD B4 B13 Support LTE receive diversity Support GNSS1 Support digital audio2 EC21 AUT Mini PCIe Support WCDMA B1 B...

Page 15: ...WCDMA receive diversity Support GNSS1 Support digital audio2 EC21 EC Mini PCIe Support LTE FDD B1 B3 B7 B8 B20 B28A Support WCDMA B1 B8 Support GSM 900 1800MHz Support LTE WCDMA receive diversity Sup...

Page 16: ...t 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 M...

Page 17: ...ort frame synchronization Support master and slave modes but must be the master in long frame synchronization USB Interface Compliant with USB 2 0 specification slave only the data transfer rate can r...

Page 18: ...llowing figure shows the block diagram of EC21 Mini PCIe EC21 Module PCM I2C Mini PCI Express Interface USB W_DISABLE PERST LED_WWAN Main Antenna Connector VCC Main Antenna VBAT GNSS Antenna Connector...

Page 19: ...igure shows the pin assignment of EC21 Mini PCIe module The top side contains EC21 module and antenna connectors BOT TOP Pin Name Pin No WAKE 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41...

Page 20: ...DO Digital Output IO Bidirectional OC Open Collector PI Power Input PO Power Output Pin No Mini PCI Express Standard Name EC21 Mini PCIe Pin Name I O Description Comment 1 WAKE WAKE OC Output signal u...

Page 21: ...ct to DTE s RX 14 UIM_RESET USIM_RST DO Reset signal of U SIM card 15 GND GND Mini card ground 16 UIM_VPP RESERVED Reserved 17 RESERVED RI DO Ring indication 18 GND GND Mini card ground 19 RESERVED RE...

Page 22: ...nd 36 USB_D USB_DM IO USB differential data Require differential impedance of 90 37 GND GND Mini card ground 38 USB_D USB_DP IO USB differential data Require differential impedance of 90 39 3 3Vaux VC...

Page 23: ...k 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...

Page 24: ...VCC_3V3 pins and ground pins Table 6 Pin Definition of VCC_3V3 and GND Pins The typical supply voltage of EC21 Mini PCIe is 3 3V In the 2G network the input peak current may reach 2 7A during the tra...

Page 25: ...ace Table 7 Pin Definition of U SIM Interface EC21 Mini PCIe supports U SIM card hot plug via the USIM_PRESENCE pin The function supports low level and high level detections By default It is disabled...

Page 26: ...tion 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 USIM_VDD GND USIM_RST...

Page 27: ...U SIM peripheral circuit should be close to the U SIM card connector The pull up resistor on USIM_DATA line can improve anti jamming capability when long layout trace and sensitive occasion are applie...

Page 28: ...aced close to the module and also these resistors should be placed close to each other The extra stubs of trace must be as short as possible The following principles should be complied with when desig...

Page 29: ...shows the pin definition of the main UART interface Table 9 Pin Definition of Main UART Interface The signal level of main UART interface is 3 3V When connecting to the peripheral MCU RAM customers ne...

Page 30: ...ng modes Primary mode short frame synchronization works as either master or slave Auxiliary mode long frame synchronization works as master only In primary mode the data is sampled on the falling edge...

Page 31: ...kHz or 2048kHz PCM_CLK and an 8kHz 50 duty cycle PCM_SYNC The following figure shows the timing relationship in auxiliary mode with 8kHz PCM_SYNC and 256kHz PCM_CLK PCM_CLK PCM_SYNC PCM_DOUT MSB LSB P...

Page 32: ...The digital audio PCM function is only supported on Telematics version 3 8 Control and Indication Signals The following table shows the pin definition of control and indication signals Table 11 Pin D...

Page 33: ...s for module to enter sleep mode please refer to Chapter 3 4 1 3 8 3 W_DISABLE Signal EC21 Mini PCIe provides a W_DISABLE signal to disable or enable the RF function excluding GNSS The W_DISABLE pin i...

Page 34: ...g figure VIL 0 5V VIH 2 3V VCC_3V3 150ms Resetting Module Status Running PERST Restart 460ms Figure 12 Timing of Resetting Module 3 8 5 LED_WWAN Signal The LED_WWAN signal of EC21 Mini PCIe is used to...

Page 35: ...Flicker slowly 200ms Low 1800ms High Network searching Flicker slowly 1800ms Low 200ms High Idle Flicker quickly 125ms Low 125ms High Data transfer is ongoing Always Low Voice calling Table 15 Indica...

Page 36: ...LTE Standard Module Series EC21 Mini PCIe Hardware Design EC21_Mini_PCIe_Hardware_Design 35 67 High Low external pull up 120ms URC returns Figure 14 WAKE Behaviors...

Page 37: ...efault By default EC21 Mini PCIe 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 GNS...

Page 38: ...minimum GNSS signal power required for the module to maintain lock within 3 minutes after loss of lock 3 Cold start sensitivity the minimum GNSS signal power at which the module can fix position succ...

Page 39: ...fault The impedance of the antenna connectors is 50 5 1 1 Operating Frequency The following table shows the operating frequencies of EC21 Mini PCIe Table 18 Operating Frequencies 3GPP Band Transmit Re...

Page 40: ...e antenna noise figure 1 5dB Active antenna gain 0dBi Active antenna embedded LNA gain 17dB GSM UMTS LTE VSWR 2 Efficiency 30 Max input power 50W LTE FDD B3 1710 1785 1805 1880 MHz LTE FDD B4 1710 175...

Page 41: ...use a passive GNSS antenna when LTE B13 or B14 is supported as the use of active antenna may generate harmonics which will affect the GNSS performance 2 Since the GNSS port has a 2 85V voltage output...

Page 42: ...lugs listed in the following figure can be used to match the receptacles Figure 16 Mechanicals of U FL LP Mating Plugs The following figure describes the space factor of mating plugs Figure 17 Space F...

Page 43: ...i PCIe Power supply requirements I O requirements RF characteristics GNSS receiver ESD characteristics Current consumption Thermal consideration 6 2 Power Supply Requirements The input voltage of EC21...

Page 44: ...5V 6 4 RF Characteristics The following tables show the conducted RF output power and receiving sensitivity of EC21 Mini PCIe module Table 22 Conducted RF Output Power of EC21 Mini PCIe Parameter Des...

Page 45: ...5dBm 104 7dBm WCDMA B8 110 5dBm 103 7dBm LTE FDD B1 10MHz 98 0dBm 98 0dBm 101 5dBm 96 3dBm LTE FDD B3 10MHz 96 5dBm 98 5dBm 101 5dBm 93 3dBm LTE FDD B5 10MHz 98 0dBm 98 5dBm 101 0dBm 94 3dBm LTE FDD...

Page 46: ...6 7dBm WCDMA B5 110 5dBm 104 7dBm LTE FDD B1 10MHz 98 5dBm 98 0dBm 101 0dBm 96 3dBm LTE FDD B3 10MHz 98 0dBm 97 0dBm 100 0dBm 93 3dBm LTE FDD B5 10MHz 98 0dBm 99 0dBm 102 5dBm 94 3dBm LTE FDD B7 10MHz...

Page 47: ...1 7dBm 96 3dBm LTE FDD B19 10MHz 99 2dBm 99 0dBm 101 4dBm 96 3dBm LTE FDD B26 10MHz 99 5dBm 99 0dBm 101 5dBm 93 8dBm Frequency Bands Primary Diversity SIMO1 3GPP SIMO GSM850 109 0dBm 102 0dBm EGSM900...

Page 48: ...dBm 102 0dBm DCS1800 108 5dBm 102 0dbm WCDMA B1 110dBm 106 7dBm WCDMA B8 110dBm 103 7dBm LTE FDD B1 10MHz 98 5dBm 99dBm 101 2dBm 96 3dBm LTE FDD B3 10MHz 97 8dBm 99 7dBm 101 7dBm 93 3dBm LTE FDD B7 10...

Page 49: ...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 WCDM...

Page 50: ...ni PCIe 6 6 Current Consumption The following tables describe the current consumption of EC21 Mini PCIe series module Table 34 Current Consumption of EC21 A Mini PCIe Parameter Description Conditions...

Page 51: ...mA WCDMA B5 HSUPA 20 18dBm 577 0 mA LTE data transfer GNSS OFF LTE FDD B2 22 93dBm 926 0 mA LTE FDD B4 22 72dBm 934 0 mA LTE FDD B12 23 26dBm 835 0 mA WCDMA voice call WCDMA B2 22 88dBm 610 0 mA WCDM...

Page 52: ...72 0 mA LTE FDD B3 23 03dBm 974 0 mA LTE FDD B5 23 03dBm 764 0 mA LTE FDD B7 22 89dBm 959 0 mA LTE FDD B8 22 86dBm 839 0 mA Table 37 Current Consumption of EC21 AUX Mini PCIe Parameter Description Con...

Page 53: ...50 2DL 3UL 29 48dBm 605 0 mA GSM850 1DL 4UL 28 35dBm 701 0 mA EGSM900 4DL 1UL 33 50dBm 386 0 mA EGSM900 3DL 2UL 32 04dBm 563 0 mA EGSM900 2DL 3UL 29 52dBm 606 0 mA EGSM900 1DL 4UL 28 45dBm 703 0 mA DC...

Page 54: ...4UL PCL 2 22 37dBm 504 0 mA PCS1900 4DL 1UL PCL 2 26 26dBm 170 0 mA PCS1900 3DL 2UL PCL 2 25 30dBm 280 0 mA PCS1900 2DL 3UL PCL 2 23 10dBm 389 0 mA PCS1900 1DL 4UL PCL 2 21 97dBm 508 0 mA WCDMA data...

Page 55: ...800 PCL 0 29 45dBm 182 0 mA PCS1900 PCL 0 29 56dBm 195 0 mA WCDMA voice call WCDMA B1 22 15dBm 714 0 mA WCDMA B2 22 77dBm 780 0 mA WCDMA B5 23 16dBm 658 0 mA WCDMA B8 22 62dBm 698 0 mA Parameter Descr...

Page 56: ...00 3DL 2UL 30 38dBm 391 2 mA DCS1800 2DL 3UL 28 27dBm 464 2 mA DCS1800 1DL 4UL 27 01dBm 550 5 mA EDGE data transfer GNSS OFF EGSM900 4DL 1UL PCL 8 26 39dBm 198 6 mA EGSM900 3DL 2UL PCL 8 25 39dBm 303...

Page 57: ...ce call WCDMA B1 23 45dBm 794 6 mA WCDMA B8 23 51dBm 792 0 mA Parameter Description Conditions Typ Unit IVBAT Sleep state AT CFUN 0 USB disconnected 2 8 mA GSM DRX 2 USB disconnected 4 3 mA GSM DRX 9...

Page 58: ...UL 32 76dBm 344 5 mA EGSM900 3DL 2UL 32 80dBm 590 8 mA EGSM900 2DL 3UL 30 52dBm 657 3 mA EGSM900 1DL 4UL 29 49dBm 752 4 mA DCS1800 4DL 1UL 30 05dBm 229 1 mA DCS1800 3DL 2UL 30 02dBm 365 2 mA DCS1800 2...

Page 59: ...PCS1900 3DL 2UL PCL 2 26 45dBm 315 3 mA PCS1900 2DL 3UL PCL 2 26 12dBm 406 6 mA PCS1900 1DL 4UL PCL 2 26 09dBm 524 5 mA WCDMA data transfer GNSS OFF WCDMA B1 HSDPA 22 30dBm 758 3 mA WCDMA B1 HSUPA 21...

Page 60: ...SB connected 38 4 mA LTE data transfer GNSS OFF LTE FDD B1 22 97dBm 859 7 mA LTE FDD B3 22 67dBm 841 1 mA LTE FDD B8 23 00dBm 752 3 mA LTE FDD B18 23 54dBm 758 6 mA LTE FDD B19 23 61dBm 760 4 mA LTE F...

Page 61: ...dissipation performance The reference ground of the area where the module is mounted should be complete and add ground vias as many as possible for better heat dissipation Add a heatsink on the top o...

Page 62: ...eds 105 C the module works normal but provides reduced performance such as RF output power data rate etc When the maximum BB chip temperature reaches or exceeds 115 C the module will disconnect from t...

Page 63: ...All dimensions are measured in millimeter mm and the dimensional tolerances are 0 05mm unless otherwise specified 7 2 Mechanical Dimensions of EC21 Mini PCIe 10 35 0 10 34 30 0 20 4 00 0 10 48 05 0 20...

Page 64: ...n EC21_Mini_PCIe_Hardware_Design 63 67 7 3 Standard Dimensions of Mini PCI Express The following figure shows the standard dimensions of Mini PCI Express Please refer to document 1 for Detail A and De...

Page 65: ...piles with the directives and standards listed in the document 1 The following figure takes the Molex 679105700 as an example Figure 21 Dimensions of the Mini PCI Express Connector Molex 679105700 7 4...

Page 66: ...mands_ Manual AT commands manual for LTE Standard modules 3 Quectel_LTE_Standard_GNSS_Application_Note GNSS application note for LTE Standard modules 4 Quectel_LTE_Module_Thermal_Design_Guide Thermal...

Page 67: ...System GPS Global Positioning System GSM Global System for Mobile Communications HR Half Rate HSPA High Speed Packet Access HSUPA High Speed Uplink Packet Access kbps Kilo Bits Per Second LED Light Em...

Page 68: ...cy RTS Ready To Send Rx Receive SIMO Single Input Multiple Output SMS Short Message Service TX Transmitting Direction TVS Transient Voltage Suppressor UART Universal Asynchronous Receiver Transmitter...

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