Ic Data - Casio PCR-260B Service Manual

8. IC DATA

8-1. LB1268
1
4
8-2. S-80728AN-Z
1 2 3
OUT1
8
270
TR1
5
30k
6.8k
2k
1
IN1
1 OUT
2 V
DD
3 V
SS
Bottom view
Equivalent circuit
OUT2
8 7
01 270 D2
TR3
30k
TR2 TR4
6.8k 2k 3.4
2
IN2
–
RA
+
RB
1
V
REF
RC
V
SS
— 17 —
OUT3
6
5
VCC
135 D3
TR5
15k
TR6
1k
4
GND
3
IN3
V
DD
OUT