Quectel LTE OPEN EVB User Manual

LTE Module Series
LTE OPEN EVB User Guide
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The following figure shows the sketch design of audio plug which suits for the audio jack on LTE OPEN
EVB.
2
1
MIC
GND
SW
SPK_R
SPK_L
3
4
32Ω
32Ω
Figure 19: Sketch of Audio Plug
4.5.2.3. Handset Interface (J0801)
Audio interface J0801 is designed for handsets. A reference circuit design for handset interfaces J0801 is
shown below.
ESD
33pF
ESD
ESD ESD
33pF33pF
33pF33pF33pF
10pF10pF10pF
10pF 10pF 10pF
IN2P
IN2N
LOUDL/P
LOUDR/N
FB
J0801
U0101
Codec
ALC5616
TLV3104
4
1
3
2
BTB CON
J0804
Figure 20: Reference Circuit Design for Handset Interface J0801

Quectel LTE OPEN EVB Specifications

General

Brand	Quectel
Model	LTE OPEN EVB
Category	Control Unit
Language	English