ST STM32L152-EVAL - Figure 16: Audio

Schematics UM1018 32/44 Doc ID 18141 Rev 1
Figure 16. Audio
1
1
2
2
3
3
4
4
D D
C C
B B
A A
STMicroelectronics
Title:
Number: Rev: Sheet of
B.3(PCB.SCH)
Date:
11/8/2010
1
2
U29
KECG2740TBL
2
1 U25
KDMG15008-03
C82
180pF
C75
100nF
R98
100K
R100
100K
R109
10K
JP16
+3V3
+3V3
C71
470nF
R110
22K
R121
22K
C74
330pF
C66
1uF
TP9
MIC_OUT
TP8
MIC+
R99
1K
R128
100
R106
2K2
C72
47pF
VDD
R101
15K
13
2
RV1
[N/A]
Speaker+
Speaker-
1
10
2
CN3
ST-613
C69
[N/A]
R108 0
Audio_OUT
Audio_IN
C67
10uF
C68
4.7uF
C73
2.2uF
R129
18K
VDD
R107 82K
R135
680
C84
4.7uF
+3V3
R103
0
C70
[N/A]
MB819 4 14
STM32L152-EVAL Audio
Standby
1
Bypass
2
VIN+
3
VIN-
4
VOUT1
5
VCC
6
GND
7
VOUT2
8
U27
TS4990IST
C83
1uF
PA4
PE7
R75 0
4
3
1
2 5
U28
TS461CLT
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