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Telit Wireless Solutions
Control Unit
HE910
Telit Wireless Solutions HE910 User Manual
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HE910 Hardw
are User Gui
de
1VV0300925 Rev.
32
Page
103
of
111
201
9-
11
-
25
15.9.2.
Reel Detail
Figure
15
-
12
Reel detail
1
Figure
15
-
13
Reel detail
2
102
104
Table of Contents
Notice
2
Copyrights
2
Computer Software Copyrights
2
Usage and Disclosure Restrictions
3
Applicability Table
4
Contents
5
Table of Contents
5
1 Introduction
9
Scope
9
Audience
9
Contact Info and Support
9
Text Conventions
10
Related Documents
11
2 Overview
12
3 He910 Module Connections
13
Pin-Out
13
LGA Pads Layout (HE910)
26
LGA Pads Layout (HE910-D)
27
LGA Pads Layout (HE910-EUD/EUR, HE910-NAD/NAR and HE910-GL)
28
LGA Pads Layout (HE910-EUG and HE910-NAG)
29
4 Hardware Commands
30
Turning on the HE910
30
VV0300925 Rev
32
Turning off the HE910
35
HE910 Unconditional Shutdown
37
5 Power Supply
41
Power Supply Requirements
41
Power Consumption
42
General Design Rules
44
Electrical Design Guidelines
44
Input Source Power Supply Design Guidelines
44
Input Source Power Supply Design Guidelines
45
Battery Source Power Supply Design Guidelines
46
Thermal Design Guidelines
47
Power Supply PCB Layout Guidelines
48
6 Gsm/Wcdma Radio Section
50
HE910 Product Variants
50
TX Output Power
51
Sensitivity
51
GSM/WCDMA Antenna Requirements
52
GSM/WCDMA - PCB Line Guidelines
53
PCB Guidelines in Case of FCC Certification
55
Transmission Line Design
55
Transmission Line Measurements
56
GSM/WCDMA Antenna - Installation Guidelines
58
Antenna Diversity Requirements
58
7 Gps Receiver
60
GPS Performances
60
GPS Signals Pinout
61
RF Front End Design
62
RF Signal Requirements
62
GPS Antenna Polarization
63
GPS Antenna Gain
64
Active Versus Passive Antenna
64
GPS Antenna - PCB Line Guidelines
65
RF Trace Losses
65
Implications of the Pre-Select SAW Filter
65
External LNA Gain and Noise Figure
66
Powering the External LNA (Active Antenna)
66
External LNA Enable
66
Shielding
67
GPS Antenna - Installation
67
8 Logic Level Specifications
68
Unconditional Shutdown
70
9 Usb Port
72
USB 2.0 HS Description
72
10 Spi Port
73
SPI Connections
73
11 Usb Hsic
75
12 Serial Ports
77
Modem Serial Port 1 (Usif0)
78
Modem Serial Port 2 (Usif1)
81
RS232 Level Translation
82
13 Audio Section Overview
84
Electrical Characteristics
84
CODEC Examples
84
14 General Purpose I/O
85
GPIO Logic Levels
86
Using a GPIO Pad as INPUT
87
Using a GPIO Pad as OUTPUT
87
Indication of Network Service Availability
88
RTC Bypass out
89
External SIM Holder Implementation
89
VAUX Power Output
89
ADC Converter
90
Description
90
Using ADC Converter
90
15 Mounting the He910 on the Application
91
General
91
Module Finishing & Dimensions
91
Recommended Foot Print for the Application
93
Stencil
94
PCB Pad Design
94
PCB Pad Dimensions
95
Solder Paste
97
HE910 Solder Reflow
97
Packing System (Tray)
99
Packing System (Reel)
102
Carrier Tape Detail
102
Reel Detail
103
Packaging Detail
104
Moisture Sensitivity
104
16 Safety Recommandations
105
FCC/IC Regulatory Notices
106
Anatel Approvals
108
Document History
109
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Telit Wireless Solutions HE910 Specifications
General
Brand
Telit Wireless Solutions
Model
HE910
Category
Control Unit
Language
English
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