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AF20
Quectel AF20 User Manual
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Wi-Fi&Blueto
oth
Module
Series
AF20_Hardw
are_Design
40
/
49
5.2.
Recomme
nded
Footprint
Fig
ure
22
:
Recom
mended
Foot
print
Keep
at
least
3
m
m
between
the
module
and
other
components
on
the
motherboa
rd
to
improve
soldering
quality
and
maintenanc
e
conven
ience.
NOTE
40
42
Table of Contents
Safety Information
4
About the Document
6
Table of Contents
7
Contents
7
Introduction
11
Special Mark
11
Product Overview
12
Key Features
12
Functional Diagram
14
EVB Kit
14
Application Interfaces
15
General Description
15
Pin Assignment
16
Pin Description
17
Power Supply
20
Wi-Fi Application Interface
22
Wlan_En
22
SDIO Interface
23
Bluetooth Application Interface
24
Bt_En
25
PCM Interface
25
Bluetooth UART
26
Coexistence UART
27
RF Antenna Interface
28
Pin Definition of the RF Antenna Interface
28
Operating Frequency
28
Reference Design
28
RF Routing Guidelines
29
Requirements for Antenna Design
31
RF Connector Recommendation
31
Electrical Characteristics & Reliability
34
Absolute Maximum Ratings
34
Digital I/O Characteristics
34
Power Consumption
35
RF Performances
36
ESD Protection
38
Mechanical Information
39
Mechanical Dimensions
39
Recommended Footprint
41
Top and Bottom Views
42
Storage, Manufacturing and Packaging
43
Storage Conditions
43
Manufacturing and Soldering
44
Packaging Specification
46
Carrier Tape
46
Plastic Reel
47
Packaging Process
47
Appendix References
49
4
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Quectel AF20 Specifications
General
Brand
Quectel
Model
AF20
Category
GSM/GPRS Modules
Language
English
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