
SA575
http://onsemi.com
2
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
S
DG
VREF
S
+
+
OP AMP
VCC
575
4.7
mF
10
mF
0.1
mF
VCC +5V
10
mF
2.2
mF
10
mF
CRECT
1
mF
VIN
VREF
VOUT
CRECT
2.2
mF
10
mF
VIN
+
VOUT
GND
VREF
10
mF
Figure 1. Block Diagram and Test Circuit
3.8k
W
10k
W
10k
W
3.8k
W
10k
W
10k
W
10k
W
30k
W
R8
30k
W
C3
C6
C15
C14
R13
C11
C10
R7
C8
PIN FUNCTION DESCRIPTION
Pin
Symbol
Description
1
+VIN1
NonInverted Input 1
2
VIN1
Inverted Input 1
3
VOUT
Output
4
RECT. IN1
Rectifier 1 Input
5
CRECT1
External Capacitor Pinout for Rectifier 1
6
SUM OUT1
Summation Output 1
7
COMP. IN1
Compensator Pin
8
VREF
Voltage Reference
9
GAIN CELL IN1
Variable Gain Cell Input 1
10
GND
Ground
11
GAIN CELL IN2
Variable Gain Cell Input 2
12
SUM NODE 2
Summation Node 2
13
COMP. IN2
Compensator Pin
14
SUM OUT2
Summation Output 2
15
CRECT2
External Capacitor Pinout for Rectifier 2
16
RECT. IN2
Rectifier 2 Input
17
VOUT2
Output 2
18
IN2
Inverted Input 2
19
+VIN2
NonInverted Input 2
20
VCC
Positive Power Supply