Telit Wireless Solutions LE920-NA Unit Manuals

Manuals and User Guides for Telit Wireless Solutions LE920-NA Unit. We have 1 Telit Wireless Solutions LE920-NA Unit manual available for free PDF download: Hardware User's Manual

Telit Wireless Solutions LE920-NA Hardware User's Manual

Telit Wireless Solutions LE920-NA Hardware User's Manual (76 pages)

Rugged LGA Automotive Smart Module

Brand: Telit Wireless Solutions | Category: GPS | Size: 1 MB

Table of Contents

Table of Contents
5
1 Introduction

9
- Scope
  9
- Audience
  9
- Contact Information, Support
  9
- Document Organization
  10
- Text Conventions
  11
- Related Documents
  11
2 General Product Description

12
- Overview
  12
- LE920 Mechanical Dimensions
  13
- Weight
  13
- Environmental Requirements
  14
  - Temperature Range
    14
  - Rohs Compliance
    14
- Operating Frequency
  15
  - Wcdma1700 - B4
    15
  - LE920-NA Only)
    15
  - Tx: 1312 ~ 1513
    15
  - Rx: 9662 ~ 9938
    15
  - 400 Mhz
    15
3 LE920 Module Connections

17
- Pin-Out
  17
  - LGA Pads Layout
    24
4 Hardware Commands

25
5 Power Supply

33
- Power Supply Requirements
  33
- General Design Rules
  35
6 Antenna(S)

42
7 Logic Level Specifications

48
8 USB Port

49
9 Serial Ports

50
- Modem Serial Port 1
  51
- Modem Serial Port 2
  52
- RS232 Level Translation
  52
10 Audio Section Overview

54
- Digital Audio
  54
11 General Purpose I/O

56
- Logic Level Specifications
  57
- Using a GPIO Pad as Input
  57
- Using a GPIO Pad as Output
  58
- Using the Temperature Monitor Function
  59
  - Short Description
    59
- Indication of Network Service Availability
  59
- RTC Bypass out
  60
- VAUX Power Output
  60
12 ADC Section

61
- ADC Converter
  61
  - Description
    61
  - Using ADC Converter
    61
13 Mounting the Module on Your Board

62
- General
  62
- Finishing & Dimensions
  62
- Recommended Foot Print for the Application
  63
- Stencil
  64
- PCB Pad Design
  64
- Recommendations for PCB Pad Dimensions (MM)
  64
- Solder Paste
  66
  - Solder Reflow
    66
14 Application Guide

68
- Debug of the LE920 in Production
  68
- Bypass Capacitor on Power Supplies
  69
- SIM Interface
  69
- EMC Recommendations (TBD)
  70
- Download and Debug Port
  71
15 Packing System

72
- Tray Drawing
  73
- Moisture Sensibility
  74
16 Safety Recommendations

75
17 Document History

76

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