Product Info

LTE Module Series
EC25 Hardware Design
EC25_Hardware_Design 6 / 112
3.15. Network Status Indication ..................................................................................................... 61
3.16. STATUS ................................................................................................................................ 62
3.17. Behaviors of RI ..................................................................................................................... 63
3.18. SGMII Interface ..................................................................................................................... 64
3.19. Wireless Connectivity Interfaces ........................................................................................... 66
3.19.1. WLAN Interface ........................................................................................................... 68
3.19.2. BT Interface* ................................................................................................................ 68
3.20. USB_BOOT Interface............................................................................................................ 69
4 GNSS Receiver ................................................................................................................................ 70
4.1. General Description .............................................................................................................. 70
4.2. GNSS Performance .............................................................................................................. 70
4.3. Layout Guidelines ................................................................................................................. 71
5 Antenna Interfaces .......................................................................................................................... 72
5.1. Main/Rx-diversity Antenna Interfaces.................................................................................... 72
5.1.1. Pin Definition ................................................................................................................ 72
5.1.2. Operating Frequency ................................................................................................... 72
5.1.3. Reference Design of RF Antenna Interface ................................................................. 74
5.1.4. Reference Design of RF Layout ................................................................................... 74
5.2. GNSS Antenna Interface ....................................................................................................... 76
5.3. Antenna Installation .............................................................................................................. 78
5.3.1. Antenna Requirement .................................................................................................. 78
5.3.2. Recommended RF Connector for Antenna Installation ................................................ 79
6 Electrical, Reliability and Radio Characteristics .......................................................................... 81
6.1. Absolute Maximum Ratings .................................................................................................. 81
6.2. Power Supply Ratings ........................................................................................................... 82
6.3. Operation and Storage Temperatures .................................................................................. 82
6.4. Current Consumption ............................................................................................................ 83
6.5. RF Output Power .................................................................................................................. 94
6.6. RF Receiving Sensitivity ....................................................................................................... 95
6.7. Electrostatic Discharge ......................................................................................................... 99
6.8. Thermal Consideration .......................................................................................................... 99
7 Mechanical Dimensions................................................................................................................ 102
7.1. Mechanical Dimensions of the the Module .......................................................................... 102
7.2.
Recommended Footprint ..................................................................................................... 104
7.3. Design Effect Drawings of the Module ................................................................................ 105
8 Storage, Manufacturing and Packaging ...................................................................................... 106
8.1. Storage ............................................................................................................................... 106
8.2. Manufacturing and Soldering .............................................................................................. 107
8.3. Packaging ........................................................................................................................... 108
9 Appendix A References ................................................................................................................ 109
10 Appendix B GPRS Coding Schemes ........................................................................................... 113