Fostex CR300 Service Manual page 55

BA5932FP (SERVO DIGITAL PCB ASSY: IC352, Driver IC)
• Block Diagram
28 27 26
10k
10k
1 2 3
• Pin Function
No. Pin Name
1 MUTE Mute pin
2 OPIN1 1+ OP amp. non-inverting input
3 FWD1 Forward input
4 REV1 Reverse input
5 OPIN1 1- Op amp. inverting input
6 OPOUT1 1 OP amp. output
7 OPIN1 2- OP amp. inverting input
8 GND Sub-straight GND
9 OPOUT1 2 OP amp. output
10 SW Analog switch input
11 OUT1- Driver output
12 OUT1+ Driver output
13 REV Loading reverse input
14 LDOUT- Loading negative output
25 24 23 22
10k
10k
10k
10k
10k
10k
4 5 6 7
Function
21 20 19 18
Vcc
1
Vcc
10k
TSO
10k
8 9 10 11
No. Pin Name
15 LDVcc Vcc for loading and output H bridge section
16 LDOUT+ Loading positive output
17 FWD Loading forward input
18 OUT2+ Driver output
19 OUT2- Driver output
20 OPOUT2 2 OP amp. output
21 Vcc Vcc for two axes driver and loading pre section
22 OPIN 2 2 OP amp. inverting input
23 OPOUT2 1 OP amp. output
24 OPIN2 1- OP amp. inverting input
25 REV2 Reverse input
26 FWD2 Forward input
27 OPIN2 1+ OP amp. non-inverting input
28 VREF Reference voltage output
17 16 15
LOADING
1
Vcc
FWD OUT
LOADING
REV OUT
1 1
12 13 14
Function
CR300
55