Quectel EG25-G - Page 5

LTE Module Series
EG25-G Hardware Design
EG25-G_Hardware_Design 4 / 100
3.15. SGMII Interface ........................................................................................................................ 54
3.16. ADC Interfaces ........................................................................................................................ 56
3.17. Network Status Indication ........................................................................................................ 57
3.18. STATUS ................................................................................................................................... 58
3.19. Behaviors of RI ........................................................................................................................ 59
3.20. USB_BOOT Interface .............................................................................................................. 60
4 GNSS Receiver ................................................................................................................................... 61
4.1. General Description ................................................................................................................. 61
4.2. GNSS Performance ................................................................................................................. 61
4.3. Layout Guidelines .................................................................................................................... 62
5 Antenna Interfaces ............................................................................................................................. 63
5.1. Main/Rx-diversity Antenna Interfaces ...................................................................................... 63
5.1.1. Pin Definition .................................................................................................................. 63
5.1.2. Operating Frequency ..................................................................................................... 63
5.1.3. Reference Design of RF Antenna Interface ................................................................... 65
5.1.4. Reference Design of RF Layout..................................................................................... 65
5.2. GNSS Antenna Interface ......................................................................................................... 67
5.3. Antenna Installation ................................................................................................................. 68
5.3.1. Antenna Requirement .................................................................................................... 68
5.3.2. Recommended RF Connector for Antenna Installation ................................................. 69
6 Electrical, Reliability and Radio Characteristics ............................................................................ 72
6.1. Absolute Maximum Ratings ..................................................................................................... 72
6.2. Power Supply Ratings ............................................................................................................. 73
6.3. Operation and Storage Temperatures ..................................................................................... 73
6.4. Current Consumption .............................................................................................................. 74
6.5. RF Output Power ..................................................................................................................... 79
6.6. RF Receiving Sensitivity .......................................................................................................... 79
6.7. Electrostatic Discharge ............................................................................................................ 81
6.8. Thermal Consideration ............................................................................................................ 81
7 Mechanical Dimensions .................................................................................................................... 84
7.1. Mechanical Dimensions of the Module.................................................................................... 84
7.2. Recommended Footprint ......................................................................................................... 86
7.3. Design Effect Drawings of the Module .................................................................................... 87
8 Storage, Manufacturing and Packaging .......................................................................................... 88
8.1. Storage .................................................................................................................................... 88
8.2. Manufacturing and Soldering .................................................................................................. 89
8.3. Packaging ................................................................................................................................ 90
9 Appendix A References ..................................................................................................................... 92
10 Appendix B GPRS Coding Schemes ............................................................................................... 96
11 Appendix C GPRS Multi-slot Classes .............................................................................................. 97
12 Appendix D EDGE Modulation and Coding Schemes ................................................................... 99
13 IC & FCC Requirement .................................................................................................................... 100