User's Manual

HE910 Hardware User Guide
1vv0300925 Rev.28 – 2015-06-24
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 5 of 5
Contents
1 INTRODUCTION ......................................................................................................................................................... 8
1.1 S COPE ................................................................................................................................................................................ 8
1.2 A UDIENCE ........................................................................................................................................................................... 8
1.3 C ONTACT I NFORMATION , S UPPORT .......................................................................................................................................... 8
1.4 D OCUMENT O RGANIZATION ................................................................................................................................................... 9
1.5 T EXT C ONVENTIONS ............................................................................................................................................................ 10
1.6 R ELATED D OCUMENTS ......................................................................................................................................................... 10
1.7 D OCUMENT H ISTORY .......................................................................................................................................................... 11
2 OVERVIEW .............................................................................................................................................................. 12
3 HE910 MODULE CONNECTIONS ............................................................................................................................... 13
3.1 PIN-OUT ......................................................................................................................................................................... 13
3.1.1 LGA Pads Layout (HE910) ....................................................................................................................................... 19
3.1.2 LGA Pads Layout (HE910-D) ................................................................................................................................... 20
3.1.3 LGA Pads Layout (HE910-EUD/EUR, HE910-NAD/NAR and HE910-GL) ................................................................ 21
3.1.4 LGA Pads Layout (HE910-EUG and HE910-NAG) .................................................................................................... 22
4 HARDWARE COMMANDS ........................................................................................................................................ 23
4.1 T URNING ON THE HE910 ................................................................................................................................................... 23
4.2 T URNING OFF THE HE910 .................................................................................................................................................. 28
4.3 HE910 U NCONDITIONAL S HUTDOWN .................................................................................................................................... 30
5 POWER SUPPLY ....................................................................................................................................................... 33
5.1 P OWER S UPPLY R EQUIREMENTS ............................................................................................................................................ 33
5.2 P OWER C ONSUMPTION ....................................................................................................................................................... 34
5.3 G ENERAL D ESIGN R ULES ...................................................................................................................................................... 35
5.3.1 Electrical Design Guidelines ................................................................................................................................... 35
5.3.2 Thermal Design Guidelines ..................................................................................................................................... 39
5.3.3 Power Supply PCB layout Guidelines ...................................................................................................................... 40
6 GSM/WCDMA RADIO SECTION ............................................................................................................................... 42
6.1 HE910 P RODUCT V ARIANTS ................................................................................................................................................ 42
6.2 TX O UTPUT P OWER ............................................................................................................................................................ 42
6.3 S ENSITIVITY ....................................................................................................................................................................... 43
6.4 GSM/WCDMA A NTENNA R EQUIREMENTS ............................................................................................................................ 43
6.5 GSM/WCDMA - PCB LINE G UIDELINES ................................................................................................................................ 44
6.6 PCB G UIDELINES IN CASE OF FCC CERTIFICATION ...................................................................................................................... 46
6.6.1 Transmission line design ........................................................................................................................................ 46
6.6.2 Transmission line measurements ........................................................................................................................... 47
6.7 GSM/WCDMA A NTENNA - I NSTALLATION G UIDELINES ........................................................................................................... 49
6.8 A NTENNA D IVERSITY R EQUIREMENTS ..................................................................................................................................... 50
7 GPS RECEIVER .......................................................................................................................................................... 51
7.1 GPS P ERFORMANCES .......................................................................................................................................................... 51
7.2 GPS S IGNALS P INOUT ......................................................................................................................................................... 52
7.3 RF F RONT E ND D ESIGN ....................................................................................................................................................... 52