Motorola APX 6000 - Figure 8-82. HLN5977 A; HLN5978 B Audio Circuit

8-158 Schematics, Boards Overlays, and Parts Lists: Expansion Board
Figure 8-82. HLN5977A/ HLN5978B Audio Circuit
A
NC
VOUT
VCC_2.775
1
C2123
1
4
2
3
U2104
STLM20
0.1UF
NC
VCC
GND
TP2102
TEST_POINT
C2102
C2103
AUD_PA_SHUTDOWN
AUD_PA_IN_P
AUD_PA_IN_N
0.1UF
0.1UF
IN
IN
IN
VO_POS
PGND GND
SHUTDOWN
IN_POS
IN_NEG
PVDD
VDD
VO_NEG
VCC_1.85
VSW_5.4
C2101
C2104
R2101
C3
A3
B1
C2
B2
B3
A1
C1
A2
U2101
100K
10UF
100PF
TPA2034D1
L2101
L2102
C2122
C2119
C2118
R2124
.47UF
.47UF
10UH
1UF
1UF
20
10UH
AUD_INT_SPKR_FILT_N_1
A
A
A
C2121
C2120
R2123
.33UF
20
AUD_INT_SPKR_FILT_P_1
A
L2103
20NH
AUD_INT_SPKR_FILT_P
L2104
AUD_INT_SPKR_FILT_N
20NH
OUT
OUT