User's Manual

LE920A4 HW User Guide
Doc#: 1VV0301261
Rev. 4.3 Page 5 of 123 2017-12-07
CONTENTS
1. INTRODUCTION .............................................................................................9
Scope ............................................................................................................. 9
Audience......................................................................................................... 9
Contact Information, Support .......................................................................... 9
Text Conventions ...........................................................................................10
Related Documents .......................................................................................11
2. GENERAL PRODUCT DESCRIPTION ......................................................... 12
Overview........................................................................................................12
Applications ...................................................................................................12
General Functionality and Main Features.......................................................13
Block Diagram ...............................................................................................15
Environmental Requirements .........................................................................17
2.5.1. Temperature Range .......................................................................................17
2.5.2. RoHS Compliance .........................................................................................17
Frequency Bands ...........................................................................................18
2.6.1. RF Bands per Regional Variant .....................................................................18
2.6.2. Reference Table of RF Bands Characteristics ...............................................18
RF parameters ...............................................................................................21
2.7.1. Sensitivity ......................................................................................................21
2.7.2. Output power .................................................................................................21
Mechanical Dimensions .................................................................................22
Weight ...........................................................................................................22
3. MODULE CONNECTIONS ............................................................................ 23
Pin-out ...........................................................................................................23
Signals That Must Be Connected ...................................................................37
LE940A4 LGA Pads Layout ...........................................................................40
4. ELECTRICAL SPECIFICATIONS ................................................................. 41
Absolute Maximum Ratings – Not Operational ...............................................41
Recommended Operating Conditions ............................................................41
Logic Level Specifications ..............................................................................41
4.3.1. 1.8V Pads - Absolute Maximum Ratings ........................................................42
4.3.2. 1.8V Standard GPIOs ....................................................................................42
4.3.3. 1.8V SD Card Pads .......................................................................................43
4.3.4. 1.8V SIM Card Pads ......................................................................................43
4.3.5. Dual Voltage Pads - Absolute Maximum Ratings ...........................................44