Quectel BG772A-GL, Hardware Design

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LPWA Module Series
BG772A-GL Hardware Design
BG772A-GL_Hardware_Design 6 / 75
3.16. ADC Interfaces* ...................................................................................................................................... 47
3.17. GPIO Interfaces* .................................................................................................................................... 48
3.18. GRFC Interfaces* ................................................................................................................................... 49
4 GNSS Receiver* ................................................................................................................................................ 50
4.1. General Description ............................................................................................................................... 50
4.2. GNSS Performance ............................................................................................................................... 50
4.3. Layout Guidelines ................................................................................................................................... 51
5 Antenna Interfaces ........................................................................................................................................... 52
5.1. Main Antenna Interface ......................................................................................................................... 52
5.1.1. Pin Definition ............................................................................................................................... 52
5.1.2. Operating Frequency ................................................................................................................. 52
5.1.3. Reference Design of Main Antenna Interface ....................................................................... 53
5.2. GNSS Antenna Interface ...................................................................................................................... 54
5.2.1. Pin Definition ............................................................................................................................... 54
5.2.2. GNSS Operating Frequency .................................................................................................... 54
5.2.3. Reference Design of GNSS Antenna Interface .................................................................... 54
5.3. Antenna Installation ............................................................................................................................... 55
5.3.1. Reference Design of RF Layout .............................................................................................. 55
5.3.2. Antenna Requirements .............................................................................................................. 57
5.3.3. Recommended RF Connector for Antenna Installation ....................................................... 58
6 Electrical, Reliability and Radio Characteristics ..................................................................................... 60
6.1. Absolute Maximum Ratings .................................................................................................................. 60
6.2. Power Supply Ratings ........................................................................................................................... 60
6.3. Operating and Storage Temperatures ................................................................................................ 61
6.4. Current Consumption ............................................................................................................................. 62
6.5. Digital I/O Characteristic ....................................................................................................................... 64
6.6. RF Output Power .................................................................................................................................... 65
6.7. RF Receiving Sensitivity ....................................................................................................................... 65
6.8. Electrostatic Discharge .......................................................................................................................... 67
7 Mechanical Dimensions ................................................................................................................................. 68
7.1. Top and Side Dimensions ..................................................................................................................... 68
7.2. Recommended Footprint ...................................................................................................................... 70
7.3. Top and Bottom Views .......................................................................................................................... 71
8 Storage, Manufacturing and Packaging .................................................................................................... 72
8.1. Storage ..................................................................................................................................................... 72
8.2. Manufacturing and Soldering ............................................................................................................... 73
8.3. Packaging ................................................................................................................................................ 74
9 Appendix A References .................................................................................................................................. 76