Quectel EG91-NAXD - Page 7

LTE Standard Module Series
EG91 Series Hardware Design
EG91_Series_Hardware_Design 6 / 106
3.15. STATUS ................................................................................................................................ 53
3.16. ADC Interface ....................................................................................................................... 53
3.17. Behaviors of RI ..................................................................................................................... 54
3.18. USB_BOOT Interface............................................................................................................ 55
4 GNSS Receiver ................................................................................................................................ 57
4.1. General Description .............................................................................................................. 57
4.2. GNSS Performance .............................................................................................................. 57
4.3. Layout Guidelines ................................................................................................................. 58
5 Antenna Interfaces .......................................................................................................................... 59
5.1. Main/Rx-diversity Antenna Interfaces.................................................................................... 59
5.1.1. Pin Definition ................................................................................................................ 59
5.1.2. Operating Frequency ................................................................................................... 59
5.1.3. Reference Design of RF Antenna Interface ................................................................. 60
5.1.4. Reference Design of RF Layout ................................................................................... 61
5.2. GNSS Antenna Interface ....................................................................................................... 63
5.3. Antenna Installation .............................................................................................................. 64
5.3.1. Antenna Requirement .................................................................................................. 64
5.3.2. Recommended RF Connector for Antenna Installation ................................................ 65
6 Electrical, Reliability and Radio Characteristics .......................................................................... 67
6.1. Absolute Maximum Ratings .................................................................................................. 67
6.2. Power Supply Ratings ........................................................................................................... 67
6.3. Operation and Storage Temperatures .................................................................................. 68
6.4. Current Consumption ............................................................................................................ 69
6.5. RF Output Power .................................................................................................................. 81
6.6. RF Receiving Sensitivity ....................................................................................................... 82
6.7. Electrostatic Discharge ......................................................................................................... 87
6.8. Thermal Consideration .......................................................................................................... 87
7 Mechanical Dimensions.................................................................................................................. 90
7.1. Mechanical Dimensions of the Module.................................................................................. 90
7.2. Recommended Footprint ....................................................................................................... 93
7.3. Top and Bottom Views of the Module ................................................................................... 94
8 Storage, Manufacturing and Packaging ........................................................................................ 96
8.1. Storage ................................................................................................................................. 96
8.2. Manufacturing and Soldering ................................................................................................ 97
8.3.
Packaging ............................................................................................................................. 98
9 Appendix A References ................................................................................................................ 101
10 Appendix B GPRS Coding Schemes ........................................................................................... 105
11 Appendix C GPRS Multi-slot Classes .......................................................................................... 106
12 Appendix D EDGE Modulation and Coding Schemes ................................................................ 108