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Quectel BG950A-GL, Manual

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Quectel BG950A-GL Manual Download Page 59

LPWA Module Series

BG950A-GL&BG951A-GL_Hardware_Design

58 / 84

Figure 25: Reference Circuit of Main Antenna Interface

5.2. GNSS

BG950A-GL module includes a fully integrated global navigation satellite system solution that supports
GPS, GLONASS. BG951A-GL module supports GPS, GLONASS, BeiDou, Galileo, QZSS, SBAS.

BG950A-GL/BG951A-GL module supports standard

NMEA-0183

protocol, and outputs NMEA sentences

via debug UART interface (data update rate: 1–10 Hz, 1 Hz by default).

By default, the module’s GNSS

engine

is switched off. It must be switched on via AT command.

BG950A-GL does not support concurrent operation of LTE and GNSS, however, LTE and GNSS are
concurrency for BG951A-GL. For more details about GNSS

engine

technology and configurations, see

document [4]

.

5.2.1. Antenna Interface & Frequency Bands

The following table shows the pin definition, frequency bands, and performance of GNSS antenna
interface.

Table 36: Pin Definition of GNSS Antenna Interface

Pin Name

Pin No.

I/O

Description

Comment

ANT_GNSS

49

AI

GNSS antenna interface

50 Ω impedance

Summary of Contents for BG950A-GL

Page 1: ...BG950A GL BG951A GL Hardware Design LPWA Module Series Version 1 0 1 Date 2021 11 04 Status Preliminary...

Page 2: ...employ commercially reasonable efforts to provide the best possible experience you hereby acknowledge and agree that this document and related services hereunder are provided to you on an as available...

Page 3: ...offer for sale or otherwise maintain production of any our products or any other hardware software device tool information or product We moreover disclaim any and all warranties arising from the cours...

Page 4: ...se interference on sensitive medical equipment so please be aware of the restrictions on the use of wireless devices when in hospitals clinics or other healthcare facilities Cellular terminals or mobi...

Page 5: ...6 from RESERVED into GNSS_NRST Updated pin 97 from RESERVED into GNSS_EN Updated pin 98 from RESERVED into SFNIND_1PPS 2 Added the weight of BG950A GL BG951A GL Table 2 3 Added the GNSS function descr...

Page 6: ...ign of PSM_IND NET_STATUS and STATUS Figure 22 Figure 23 Figure 24 14 Added the description of GNSS layout guidelines Chapter 5 3 15 Updated the power consumption of BG950A GL Chpater 6 3 16 Added the...

Page 7: ...Mode 27 3 3 Power Saving Mode PSM 27 3 4 Extended Idle Mode DRX e I DRX 28 3 5 Sleep Mode 29 3 5 1 UART Application Scenario 29 3 6 Recovery Mode 30 3 7 Power Supply 31 3 7 1 Power Supply Pins 31 3 7...

Page 8: ...2 3 Reference Design 60 5 3 Layout Guidelines 60 5 4 RF Routing Guidelines 61 5 5 Antenna Design Requirements 63 5 6 RF Connector Recommendation 63 6 Reliability and Electrical Characteristics 65 6 1...

Page 9: ...19 Pin Definition of I2C Interface 47 Table 20 Pin Definition of ADC Interfaces 48 Table 21 Characteristics of ADC Interfaces 49 Table 22 Pin Definition of PSM_IND 49 Table 23 Pin Definition of NET_ST...

Page 10: ...ble 45 BG951A GL GNSS Current Consumption 70 Table 46 Electrostatics Discharge Characteristics Temperature 25 C Humidity 45 71 Table 47 Operating and Storage Temperatures 71 Table 48 Recommended Therm...

Page 11: ...Design Translator Chip 46 Figure 20 Main UART Reference Design Transistor Circuit 46 Figure 21 Reference Design of PCM Application with Audio Codec 48 Figure 22 Reference Circuit of the PSM Status In...

Page 12: ...nformation of the module Associated with application notes and user guides makes it easy to design and to set up mobile applications with the module 1 1 Special Mark Table 1 Special Mark Mark Definiti...

Page 13: ...ial grade modules for industrial and commercial applications only BG950A GL BG951A GL module is an SMD type module which can be engineered into M2M applications such as smart metering tracking system...

Page 14: ...B20 B25 B26 B27 B28 B66 Cat NB1 NB2 4 LTE HD FDD B1 B2 B3 B4 B5 B8 B12 B13 B17 B18 B19 B20 B25 B28 B66 Power Class 3 23 dBm 2 7 dB GPS GLONASS BG951A GL GPS GLONASS BeiDou Galileo QZSS SBAS Please not...

Page 15: ...data bits no parity 1 stop bit Supports RTS and CTS hardware flow control CLI UART Used for firmware upgrade software debugging log output GNSS data and NMEA sentences output 115200 bps baud rate by...

Page 16: ...ances of 3GPP When the temperature returns to the operating temperature range the module meets 3GPP specifications again Supports 1 4 MHz RF bandwidth for LTE Cat M1 Support 200 kHz RF bandwidth for L...

Page 17: ...LPWA Module Series BG950A GL BG951A GL_Hardware_Design 16 84 Figure 1 Functional Diagram of BG950A GL...

Page 18: ...LPWA Module Series BG950A GL BG951A GL_Hardware_Design 17 84 Figure 2 Functional Diagram of BG951A GL PCM and I2C interfaces are used for VoLTE only NOTE...

Page 19: ...dule Series BG950A GL BG951A GL_Hardware_Design 18 84 2 4 Pin Assignment The following figure illustrates the pin assignment of BG950A GL and BG951A GL Figure 3 Pin Assignment of BG950A GL BG951A GL T...

Page 20: ...sed for VoLTE only 5 Only BG951A GL supports GNSS_BOOT pin 75 GNSS_NRST pin 76 GNSS_EN pin 97 SFNIND_1PPS pin 98 6 For BG950A GL pin 27 and pin 28 can only be used as CLI UART interface When pin 27 an...

Page 21: ...1 0 V Internally pulled up with a 470 k resistor Reset Pin Name Pin No I O Description DC Characteristics Comment RESET_N 17 DI Reset the module VILmax 0 3 V VIHmin 1 3 V Internally pulled up with a...

Page 22: ...V VOLmax 0 36 V VOHmin 1 44 V USIM_CLK 46 DO U SIM card clock VOLmax 0 36 V VOHmin 1 44 V USIM_GND 47 Specified ground for U SIM card Main UART Interface Pin Name Pin No I O Description DC Characteri...

Page 23: ...Characteristics Comment DBG_RXD 22 DI Debug UART receive VILmin 0 2 V VILmax 0 54 V VIHmin 1 26 V VIHmax 2 0 V 1 8 V power domain If these pins are unused keep them open DBG_TXD 23 DO Debug UART trans...

Page 24: ...ANT_MAIN 60 AIO Main antenna interface 50 impedance ANT_GNSS 49 AI GNSS antenna interface 50 impedance If unused keep this pin open GPIO Interfaces Pin Name Pin No I O Description DC Characteristics C...

Page 25: ...ep this pin open PON_TRIG 96 DI Used for main UART function control and for entering exiting e l DRX PSM sleep and power off modes VILmin 0 2 V VILmax 0 3 V VIHmin 1 V VIHmax 1 98 V 1 8 V power domain...

Page 26: ...es are for VoLTE only 4 Keep all RESERVED pins and unused pins unconnected 2 6 EVB To help customers to develop applications with the module conveniently Quectel supplies an evaluation board EVB USB t...

Page 27: ...t the module into airplane mode where the RF function is invalid Minimum Functionality Mode AT CFUN 0 can set the module into a minimum functionality mode without removing the power supply In this mod...

Page 28: ...mode is similar to power off but the module remains registered on the network and there is no need to re attach or re establish PDN connections Therefore BG950A GL BG951A GL module in PSM cannot imme...

Page 29: ...and the network may negotiate over non access stratum signalling the use of e I DRX for reducing its power consumption while being available for mobile terminating data and or network originated proce...

Page 30: ...ng procedures of BG950A GL BG951A GL 3 5 1 UART Application Scenario If the host communicates with the module via main UART interface perform the steps below in sequence to let the module enter sleep...

Page 31: ...ils 3 6 Recovery Mode BG770A GL provides the recovery mode for firmware upgrade in emergency cases Recovery mode can force the module to boot via debug UART interface for firmware upgrade The followin...

Page 32: ...ition re insertion from 0 V VBAT slew rate 25 mV s After the module starts up normally in order to ensure full function mode the minimum power supply voltage should be higher than 2 2 V 3 7 2 Voltage...

Page 33: ...sub paths with the star structure The width of VBAT_BB trace should be no less than 1 mm The width of VBAT_RF trace should be no less than 1 mm In principle the longer the VBAT trace is the wider it w...

Page 34: ...n the module It is recommended to use an open drain collector driver to control the PWRKEY A simple reference design is illustrated in the following figure Figure 7 Turn on the Module with Driving Cir...

Page 35: ...ario is illustrated in the following figure Figure 9 Power up Timing 3 Ensure that VBAT is stable for at least 100 ms before pulling down the PWRKEY 4 Pull PON_TRIG high before the module is turned on...

Page 36: ...h PWRKEY and PON_TRIG When the module is powered on driving PWRKEY low for 650 1500 ms and then releasing it and pull down the PON_TRIG with 200 ms after which the module will execute a power down pro...

Page 37: ...lar to the PWRKEY control circuit An open drain collector driver or button can be used to control RESET_N 1 To avoid damaging the internal flash do not switch off the power supply when the module work...

Page 38: ...GL BG951A GL_Hardware_Design 37 84 Figure 12 Reference Circuit of RESET_N with Driving Circuit Figure 13 Reference Circuit of RESET_N with a Button The reset timing is illustrated in the following fig...

Page 39: ...ol the module to enter or exit PSM mode and sleep mode Enable disable the main UART interface communication function Used for the turn on off application of the module PON_TRIG must be designed to all...

Page 40: ...low after which the module will excute a power down procedure For more details see Chapter 3 9 Pull down PON_TRIG and remain it low in e l DRX PSM sleep and power off modes In other cases pull high P...

Page 41: ...e USIM_DET and both high level and low level detections are supported The function is disabled by default and refer to AT QSIMDET in document 3 for more details Pin Name Pin No I O Description Comment...

Page 42: ...Pin U SIM Card Connector If U SIM card detection function is not needed keep USIM_DET unconnected A reference circuit for U SIM interface with a 6 pin U SIM card connector is illustrated in the follow...

Page 43: ...ed to reserve 0 series resistors for the U SIM signals of the module to facilitate debugging The 33 pF capacitors are used for filtering interference of EGSM900 Note that the U SIM peripheral circuit...

Page 44: ...ute signal traces under crystals oscillators magnetic devices and RF signal traces It is important to route the USB differential traces in inner layer of the PCB and surround the traces with ground on...

Page 45: ...t and is used for RF calibration and log output and supports RTS and CTS hardware flow control The default frame format is 8N1 8 data bits no parity 1 stop bit CLI GNSS UART For BG950A GL module this...

Page 46: ...interface It is recommended to use a level shifting chip without internal pull up The voltage level translator TXB0108PWR provided by Texas Instruments is recommended The following figure shows a refe...

Page 47: ...y attention to the direction of connection Figure 20 Main UART Reference Design Transistor Circuit 1 Transistor circuit solution is not suitable for applications with high baud rates exceeding 460 kbp...

Page 48: ...ference design is illustrated as follows 4 Please note that the module s CTS is connected to the host s CTS and the module s RTS is connected to the host s RTS Pin Name Pin No I O Description Comment...

Page 49: ...ground Table 20 Pin Definition of ADC Interfaces The voltage value on ADC pins can be read via AT QADC port AT QADC 0 read the voltage value on ADC0 AT QADC 1 read the voltage value on ADC1 For more d...

Page 50: ...ltage Range 0 1 8 V Resolution 6 12 bit 1 ADC input voltage must not exceed 1 8 V 2 It is prohibited to supply any voltage to ADC pin when VBAT is removed 3 It is recommended to use resistor divider c...

Page 51: ...ing tables describe pin definition and logic level changes in different network status Table 24 Working State of Network Connection Status Indication Pin Name Pin No I O Description Comment NET_STATUS...

Page 52: ...STATUS The STATUS pin is an open drain output for indicating the module s operation status It will output high level when module is powered on successfully Table 25 Pin Definition of STATUS A referenc...

Page 53: ...s The module provides two generic RF control interfaces for the control of external antenna tuners Table 28 Pin Definition of GRFC Interfaces Pin Name Pin No I O Description Comment MAIN_RI 39 DO Main...

Page 54: ...GPIO Interface GRFC1 Level GRFC2 Level Frequency Range MHz Band Low Low TBD TBD Low High TBD TBD High Low TBD TBD Pin Name Pin No I O Description Comment GPIO1 25 DIO General purpose input output 1 8...

Page 55: ...of BG950A GL BG951A GL Pin Name Pin No I O Description Comment ANT_MAIN 60 AIO Main antenna interface 50 impedance Only passive antennas are supported Operating Frequency Transmit MHz Receive MHz Uni...

Page 56: ...756 MHz LTE HD FDD B17 9 704 716 734 746 MHz LTE HD FDD B18 815 830 860 875 MHz LTE HD FDD B19 830 845 875 890 MHz LTE HD FDD B20 832 862 791 821 MHz LTE HD FDD B25 1850 1915 1930 1995 MHz LTE HD FDD...

Page 57: ...y dBm Cat M1 3GPP Cat NB1 11 3GPP LTE HD FDD B1 Supported TBD 102 3 TBD 107 5 LTE HD FDD B2 TBD 100 3 TBD 107 5 LTE HD FDD B3 TBD 99 3 TBD 107 5 LTE HD FDD B4 TBD 102 3 TBD 107 5 LTE HD FDD B5 TBD 100...

Page 58: ...rimary Diversity Sensitivity dBm Cat M1 3GPP Cat NB1 14 3GPP LTE HD FDD B1 Supported TBD 102 3 TBD 107 5 LTE HD FDD B2 TBD 100 3 TBD 107 5 LTE HD FDD B3 TBD 99 3 TBD 107 5 LTE HD FDD B4 TBD 102 3 TBD...

Page 59: ...ace data update rate 1 10 Hz 1 Hz by default By default the module s GNSS engine is switched off It must be switched on via AT command BG950A GL does not support concurrent operation of LTE and GNSS h...

Page 60: ...bled TBD Warm start open sky Autonomous TBD XTRA enabled TBD Hot start open sky Autonomous TBD XTRA enabled TBD Accuracy GNSS CEP 50 Autonomous open sky TBD M 1 Tracking sensitivity the minimum GNSS s...

Page 61: ...istance between GNSS antenna and main antenna Digital circuits such as U SIM card USB interface camera module display connector and SD card should be kept away from antennas Use ground vias around the...

Page 62: ...h W the materials dielectric constant the height from the reference ground to the signal layer H and the spacing between RF traces and grounds S Microstrip or coplanar waveguide is typically used in R...

Page 63: ...round The distance between the RF pins and the RF connector should be as short as possible and all the right angle traces should be changed to curved ones The recommended trace angle is 135 There shou...

Page 64: ...mmended to use U FL R SMT connectors provided by HIROSE Figure 31 Dimensions of the U FL R SMT Connector Unit mm Antenna Type Requirements GNSS Must be a passive antenna Frequency range 1559 1609 MHz...

Page 65: ...nectors listed in the following figure can be used to match the U FL R SMT Figure 32 Mechanicals of U FL LP Connectors The following figure describes the space factor of mated connector Figure 33 Spac...

Page 66: ...g table Table 40 Absolute Maximum Ratings 7 2 Power Supply Ratings Table 41 The Module s Power Supply Ratings Parameter Min Max Unit VBAT_RF VBAT_BB 0 2 4 35 V USB_VBUS 0 3 6 0 V Voltage on Digital Pi...

Page 67: ...M1 DRX 1 28 s 1 09 mA LTE Cat NB1 DRX 1 28 s 2 14 mA LTE Cat M1 e I DRX 81 92 s PTW 2 56 s DRX 1 28 s 0 137 mA LTE Cat NB1 e I DRX 81 92 s PTW 2 56 s DRX 1 28 s 0 138 mA Idle state LTE Cat M1 DRX 1 2...

Page 68: ...28 22 68 dBm 181 85 419 20 mA LTE HD FDD B66 23 01 dBm 196 32 461 80 mA LTE Cat NB1 data transfer GNSS OFF LTE HD FDD B1 23 16 dBm 215 81 553 23 mA LTE HD FDD B2 23 25 dBm 205 67 536 87 mA LTE HD FDD...

Page 69: ...DRX 1 28 s TBD mA LTE Cat NB1 DRX 1 28 s TBD mA LTE Cat M1 e I DRX 81 92 s PTW 2 56 s DRX 1 28 s TBD mA LTE Cat NB1 e I DRX 81 92 s PTW 2 56 s DRX 1 28 s TBD mA Idle state LTE Cat M1 DRX 1 28 s TBD m...

Page 70: ...HD FDD B66 dBm TBD TBD mA LTE Cat NB1 data transfer GNSS OFF LTE HD FDD B1 dBm TBD TBD mA LTE HD FDD B2 dBm TBD TBD mA LTE HD FDD B3 dBm TBD TBD mA LTE HD FDD B4 dBm TBD TBD mA LTE HD FDD B5 dBm TBD T...

Page 71: ...ule adding ESD protective components to the ESD sensitive interfaces and points in the product design BG950A GL Description Conditions Typ Unit Searching AT CFUN 0 Cold start Passive antenna TBD mA Ho...

Page 72: ...ity to establish and maintain functions such as voice SMS and data transmission without any unrecoverable malfunction Radio spectrum and radio network are not influenced while one or more specificatio...

Page 73: ...n This chapter describes the mechanical dimensions of the module All dimensions are measured in millimeter mm and the dimensional tolerances are 0 2 mm unless otherwise specified 8 1 Mechanical Dimens...

Page 74: ...8 50 0 85 1 70 1 00 1 00 1 70 1 70 0 55 1 90 1 10 0 50 0 70 0 25 0 25 0 25 19 90 0 20 23 60 0 20 40x1 0 40x1 0 62x0 7 62x1 10 1 00 1 00 1 10 0 25 Figure 35 Module Bottom Dimensions Bottom View Unit m...

Page 75: ...5 1 70 0 85 1 70 5 95 5 95 4 25 4 25 7 65 7 65 9 70 9 60 1 70 0 85 2 55 4 25 5 95 4 25 5 95 1 70 1 70 2 50 2 50 1 10 1 10 1 10 1 10 1 10 0 70 1 00 1 00 0 25 0 25 0 25 0 20 0 15 Figure 36 Recommended F...

Page 76: ...75 84 8 3 Top and Bottom Views Figure 37 Top Bottom Views of BG950A GL BG951A GL Images above are for illustration purpose only and may differ from the actual module For authentic appearance and label...

Page 77: ...han 10 e g a drying cabinet 4 The module should be pre baked to avoid blistering cracks and inner layer separation in PCB under the following circumstances The module is not stored in Recommended Stor...

Page 78: ...ating it is strongly recommended that the module should be mounted only after reflow soldering for the other side of PCB has been completed The recommended reflow soldering thermal profile lead free r...

Page 79: ...complexity of the SMT process please contact Quectel Technical Supports in advance for any situation that you are not sure about or any process e g selective soldering ultrasonic soldering that is not...

Page 80: ...39 Carrier Tape Dimension Drawing Table 49 Carrier Tape Dimension Table Unit mm 9 3 2 Plastic Reel Figure 40 Plastic Reel Dimension Drawing Table 50 Plastic Reel Dimension Table Unit mm W P T A0 B0 K0...

Page 81: ...em then wind the heat sealed carrier tape to the plastic reel and use the protective tape for protection One plastic reel can load 250 modules Place the packaged plastic reel humidity indicator card a...

Page 82: ...ual 4 Quectel_BG770A GL BG95xA GL_GNSS_Application_Note 5 Quectel_RF_Layout_Application_Note 6 Quectel_Module_Secondary_SMT_Application_Note Abbreviation Description ADC Analog to Digital Converter Ba...

Page 83: ...m GLONASS Global Navigation Satellite System Russia GPIO General purpose Input Output GPS Global Positioning System GRFC Generic RF Controller HD Half Duplex HSS Home Subscriber Server I O Input Outpu...

Page 84: ...r PAP Password Authentication Protocol PCB Printed Circuit Board PCM Pulse Code Modulation PDU Protocol Data Unit PING Packet Internet Groper POS Point of Sale PPP Point to Point Protocol PSM Power Sa...

Page 85: ...scriber Identity Module Vmax Maximum Voltage Vnom Nominal Voltage Vmin Minimum Voltage VIHmax Maximum High level Input Voltage VIHmin Minimum High level Input Voltage VILmax Maximum Low level Input Vo...

Page 86: ...his device is a mobile device And the following conditions must be met 1 This Modular Approval is limited to OEM installation for mobile and fixed applications only The antenna installation and operat...

Page 87: ...tions of finished products Please refer to KDB784748 D01 v07 section 8 Page 6 7 last two paragraphs A certified modular has the option to use a permanently affixed label or an electronic label For a p...

Page 88: ...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 modificati...

Page 89: ...000dBi Catm LTE Band4 66 8 000dBi Catm LTE Band5 26 12 541dBi Catm LTE Band12 11 798dBi Catm LTE Band13 12 214dBi Catm LTE Band85 11 798dBi NB LTE Band2 25 11 000dBi NB LTE Band4 66 8 000dBi NB LTE Ba...

Page 90: ...tion Sciences et D veloppement conomique Canada d un module doit tre clairement visible en tout temps lorsqu il est install dans le produit h te sinon le produit h te doit porter une tiquette indiquan...

Page 91: ...LPWA Module Series BG950A GL BG951A GL_Hardware_Design 90 84...

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