— 25 —
IC301 LA7473V-TLM
IC601 LB1877V-TLM
EXT AMP NFB2-R
EXT AMP NFB1-R
EXT IN-R
INPUT SELECT CTL-2
MIC VCC
HPF ON
INT IN-R
INT AMP NFB-R
MIX AMP OUT
-R
MIX BUFF IN-L
INT AMP OUT
-R
GND
INPUT SELECT CTL-1
EXT IN-L
RIPPLE FIL
TER
INT IN-L
EXT AMP NFB1-L
EXT AMP NFB2-L
VCC
INT AMP NFB-L
INT AMP OUT
-L
MIX BUFF IN-R
MIX AMP OUT
-L
HPF IN-L
OUT
-L
BIAS
MIC MONO
HPF IN-R
OUT
-R
EXT/INT
1
2
3
4
5
6 7 8
9 10
11 12
13 14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
EXT MIC
DET
EXT MIC
AMP L
EXT MIC
AMP R
INT MIC
AMP L
MIX
AMP L
OUTPUT
AMP L
RIPPLE
FILTER
MIC
VCC
INT MIC
AMP R
MIX
AMP R
OUTPUT
AMP R
BIAS
ON
OFF
ON
OFF
EXT
INT
EXT
INT
UOUT
DR
VCC
LB
FC
OUT
VSP
IN+
VREF
S/S
20
19
18
17
16
15
14 13
12
11
VOUT
WOUT
P-GND
WB
VB
UB
OSC
COM
GND
RI
1 2
3
4 5 6
7
8
9
10
DRIVER
STARTUP
DIR LOGIC
STARTUP
DET
WAVEFORM
DET
CURRENT
DET
SPEED
DET
LOCKING
PROTECT
OSC
BIAS
REF V
TSD
+
–
