LTE Standard Module Series
EC25 Hardware Design
EC25_Hardware_Design 7 / 130
3.13. SD Card Interface ................................................................................................................. 56
3.14. Wireless Connectivity Interfaces ........................................................................................... 58
3.14.1. WLAN Interface ........................................................................................................... 61
3.14.2. BT Interface* ................................................................................................................ 61
3.15. ADC Interfaces ...................................................................................................................... 61
3.16. SGMII Interface ..................................................................................................................... 62
3.17. Network Status Indication ..................................................................................................... 64
3.18. STATUS ................................................................................................................................ 66
3.19. Behaviors of RI ..................................................................................................................... 66
3.20. USB_BOOT Interface............................................................................................................ 67
4 GNSS Receiver ................................................................................................................................ 69
4.1. General Description .............................................................................................................. 69
4.2. GNSS Performance .............................................................................................................. 69
4.3. Layout Guidelines ................................................................................................................. 70
5 Antenna Interfaces .......................................................................................................................... 71
5.1. Main/Rx-diversity Antenna Interfaces.................................................................................... 71
5.1.1. Pin Definition
................................................................................................................ 71
5.1.2. Operating Frequency ................................................................................................... 71
5.1.3. Reference Design of RF Antenna Interface ................................................................. 73
5.1.4. Reference Design of RF Layout ................................................................................... 73
5.2. GNSS Antenna Interface ....................................................................................................... 75
5.3. Antenna Installation .............................................................................................................. 77
5.3.1. Antenna Requirement .................................................................................................. 77
5.3.2. Recommended RF Connector for Antenna Installation ................................................ 78
6 Electrical, Reliability and Radio Characteristics .......................................................................... 80
6.1. Absolute Maximum Ratings .................................................................................................. 80
6.2. Power Supply Ratings ........................................................................................................... 81
6.3. Operation and Storage Temperatures .................................................................................. 81
6.4. Current Consumption ............................................................................................................ 82
6.5. RF Output Power ................................................................................................................ 104
6.6. RF Receiving Sensitivity ..................................................................................................... 105
6.7. Electrostatic Discharge ....................................................................................................... 113
6.8. Thermal Consideration ........................................................................................................ 113
7 Mechanical Dimensions..........................................................................................................
...... 116
7.1. Mechanical Dimensions of the Module................................................................................ 116
7.2. Recommended Footprint ..................................................................................................... 118
7.3. Design Effect Drawings of the Module ................................................................................ 119
8 Storage, Manufacturing and Packaging ...................................................................................... 120
8.1. Storage ............................................................................................................................... 120
8.2. Manufacturing and Soldering .............................................................................................. 121
8.3. Packaging ........................................................................................................................... 122
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