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L76 Series       

Reference Design 

 

GNSS Module Series 

 

Rev. B 

 

Date: 2016-05-17 

                                                                                                                                        www.quectel.com 

Summary of Contents for L76

Page 1: ...L76 Series Reference Design GNSS Module Series Rev B Date 2016 05 17 www quectel com...

Page 2: ...NFORMATION 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...

Page 3: ...erence Design L76_Series_Reference_Design Confidential Released 2 4 About the Document History Revision Date Author Description A 2016 04 26 Storm BAO Initial B 2016 05 17 Storm BAO Added I2C informat...

Page 4: ...ule Series L76 Series Reference Design L76_Series_Reference_Design Confidential Released 3 4 Contents About the Document 2 Contents 3 1 Introduction 4 1 1 Introduction 4 1 2 Schematics 4 Quectel Confi...

Page 5: ...ce_Design Confidential Released 4 4 1 Introduction 1 1 Introduction This document is a reference design for L76 series module The schematics included in this document are preliminary and are subject t...

Page 6: ...nter into backup mode forever The only way to wake up the module is pulling the FORCE_ON high Here Q101 Q102 R101 are not 2 Cutting off VCC and keeping V_BCKP powered will make the module enter into b...

Page 7: ...evice Level Shifting for UART 5V Power Suppply and UART Circuit VCC_MCU_5V and VCC_MODULE_3 3V and block the leakage 1 VIN 2 GND 3 CE 5 VOUT 4 NC U202 XC6209F332MR C201 100uF C204 100nF C202 100nF R20...

Page 8: ...in16 and pin17 are I2C_SDA and I2C_SCL respectively 1 UART1 can be used to output NMEA message as well as to upgrade firmware For L76 L76B pin16 and 17 are reserved and please keep them open I2C Circu...

Page 9: ...C406 is reserved for impedance matching for antenna By default C405 and C406 are not mounted R405 is 0R 3 If an external LNA is added between passive antenna and L76 76B module the total sensitivity...

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