User's Manual

LE910 Hardware User Guide
1vv0301089 Rev.7 – 25-10-2015
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Contents
1 INTRODUCTION ......................................................................................................................................................... 8
1.1 SCOPE ................................................................................................................................................................................ 8
1.2 AUDIENCE ........................................................................................................................................................................... 8
1.3 CONTACT INFORMATION, SUPPORT .......................................................................................................................................... 8
1.4 TEXT CONVENTIONS .............................................................................................................................................................. 9
1.5 RELATED DOCUMENTS ........................................................................................................................................................... 9
1.7 DOCUMENT HISTORY .......................................................................................................................................................... 10
2 OVERVIEW .............................................................................................................................................................. 11
3 LE910 MODULE CONNECTIONS................................................................................................................................ 12
3.1 PIN-OUT ......................................................................................................................................................................... 12
3.1.1 LGA Pads Layout ..................................................................................................................................................... 18
3.2 LE910 MECHANICAL DIMENSION/WEIGHT ............................................................................................................................. 19
3.3 ENVIRONMENTAL REQUIREMENTS .......................................................................................................................................... 19
3.3.1 Temperature range ................................................................................................................................................ 19
3.3.2 RoHS compliance .................................................................................................................................................... 19
4 HARDWARE COMMANDS ........................................................................................................................................ 20
4.1 TURNING ON THE LE910 .................................................................................................................................................... 20
4.2 INITIALIZATION AND ACTIVATION STATE................................................................................................................................... 22
4.3 TURNING OFF THE LE910 ................................................................................................................................................... 23
4.3.1 Shutdown by Software Command .......................................................................................................................... 23
4.3.2 Hardware Shutdown .............................................................................................................................................. 24
4.4 LE910 UNCONDITIONAL SHUTDOWN ..................................................................................................................................... 25
4.5 SUMMARY OF TURNING ON AND OFF THE MODULE ................................................................................................................. 28
5 POWER SUPPLY ....................................................................................................................................................... 29
5.1 POWER SUPPLY REQUIREMENTS ............................................................................................................................................ 29
5.2 POWER CONSUMPTION ....................................................................................................................................................... 30
5.3 GENERAL DESIGN RULES ...................................................................................................................................................... 32
5.3.1 Electrical Design Guidelines ................................................................................................................................... 32
5.3.2 Thermal Design Guidelines ..................................................................................................................................... 36
5.3.3 Power Supply PCB layout Guidelines ...................................................................................................................... 36
6 GSM/WCDMA/LTE RADIO SECTION......................................................................................................................... 39
6.1 LE910 PRODUCT VARIANTS ................................................................................................................................................. 39
6.2 OPERATING FREQUENCY ...................................................................................................................................................... 39
6.3 TX OUTPUT POWER ............................................................................................................................................................ 40
6.4 SENSITIVITY ....................................................................................................................................................................... 41
6.5 GSM/WCDMA/LTE ANTENNA REQUIREMENTS .................................................................................................................... 42
6.6 GSM/WCDMA/LTE - PCB LINE GUIDELINES ......................................................................................................................... 45
6.7 GSM/WCDMA/LTE ANTENNA - INSTALLATION GUIDELINES .................................................................................................... 46
6.8 ANTENNA DIVERSITY REQUIREMENTS ..................................................................................................................................... 46
7 GNSS RECEIVER ....................................................................................................................................................... 49
7.1 RECEIVER CHARACTERISTICS .................................................................................................................................................. 49