LG CED-8083B Service Manual page 65

IC502 (BA5925FV)
It detects the speed of the moving sled, and transfers the sled control signal from IC201 (OTI-9790) to IC501
(BA5983FM)
Block Diagram
28 27
50K
+
-
50K
20K
40K
100K
8.2K
1 2
• Pin Description
Pin No. Pin Name
1 GND
2 HA+
3 HA-
4 A+
5 CA+
6 BIAS_IN
7 CB+
8 B+
9 HB-
10 HB+
11 IN1+
12 IN1-
13 OUT1
14 STBY
48
26 25 24 23
10K
5K 5K
10K
LOGIC
40K
40K
20K
40K
100K
44K
44K
8.2K
1K
3 4 5
Description
GND
Hall Amp A Positive Input
Hall Amp A Negative Input
Hall Amp A Output
Differential Circuit A Input
Bias Amp Input
Differential Circuit B Input
Hall Amp Output
Hall Amp B Negative Input
Hall Amp B Positive Input
OP Amp 1 Positive Input
OP Amp 1 Negative Input
OP Amp 1 Output
Standby Control Pin
22 21 20
10K
Vcc 10K
10K
LEVEL
SHIFT
40K
40K
20K
40K 40K
44K
100K
44K
8.2K
1K
6 7 8 9
Pin No.
15
16
17
18
19
20
21
22
23
24
25
26
27
28
19 18 17
17K
6.8K EDGE
20K
23K
+
100K
8.2K
10 11 12
Pin Name Description
IN2+ OP Amp 2 Positive Input
IN2- OP Amp 2 Negative Input
OUT2 OP Amp 2 Output
EDGE Edge Pulse Detect Pin
VLO VL Amp Output
VL- VL Amp Negative Input
VCC VCC
HB_IN Hall Bias Input
VH+ Hall Bias Positive Output
VH- Hall Bias Negative Output
SW_CONT Switch Buffer Amp Output Control Pin
SW_OUT Switch Buffer Amp Output
SW_IN1 Switch Buffer Amp Input 1
SW_IN2 Switch Buffer Amp Input 2
16 15
-
STBY
23K
13 14