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UG96
Quectel UG96 Audio Design Guide
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GSM/GP
RS Modules
GSM
Module
Audi
o
Design
Guide
GSM Module A
udo Design
Guide
Confidential/Release
12
/
35
SPK2P
AGND
Differential layout
10pF
33pF
Close to speaker
GND
Module
22uF
ESD
Figure 4
：
SPK Re
ference Circuit
for A
OUT2
M
o
d
u
l
e
S
P
K
2
P
A
G
N
D
D
i
f
f
e
r
e
n
t
i
a
l
l
a
y
o
u
t
A
m
p
l
i
f
i
e
r
c
i
r
c
u
i
t
1
0
p
F
1
0
p
F
3
3
p
F
3
3
p
F
C
l
o
s
e
t
o
s
p
e
a
k
e
r
G
N
D
G
N
D
C
2
C
1
E
S
D
E
S
D
Figure 5
：
Receiver
Reference
Circuit
with Audio
Power A
mpli
fier for AOUT2
For the v
alue of C1 and
C2,
please refer t
o input i
mpedance o
f audio pow
er ampl
ifier
.
Note
Quectel
Confidential
12
14
Table of Contents
About the Document
3
Contents
4
Table of Contents
4
1 Introduction
8
Summary
8
Safety Information
8
2 Audio Circuit Design
10
Audio Circuit Reference
11
M1X
11
Microphone Reference Circuit
11
Receiver Reference Circuit
12
Headset Reference Circuit
14
M95
14
Microphone Reference Circuit
14
Receiver Reference Circuit
15
Headset Reference Circuit
15
SPK Reference Circuit
16
M80
17
Microphone Reference Circuit
17
Receiver Reference Circuit
17
Headset Reference Circuit
19
SPK Reference Circuit
19
Ringtone
20
Hands-Free Application at Channel AIN1/AOUT1
21
Suggestion for Audio Layout
22
TDD Noise Solution
22
Suggestion for Mechanical Design
23
Component of SPK
26
Component of Microphone
27
3 Description and Suggestion
28
AT Command
28
At+Qaudch
28
How to Modify Volume
29
At+Qmic
29
At+Clvl
30
At+Qsidet
31
Echo Algorithm
32
Description of Par0, Par2 and Par12
34
Recommended Application Field
35
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Quectel UG96 Specifications
General
Brand
Quectel
Model
UG96
Category
Control Unit
Language
English
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