Typical applications – Fairchild DUAL TRACKING VOLTAGE REGULATORS RC4194 User Manual
Page 6
PRODUCT SPECIFICATION
RC4194
6
Typical Applications
(continued)
Figure 6. Balanced Output Voltage — Op Amp Application
Figure 7. Digitally Controlled Dual 200 mA Voltage Regulator
0.001
µ
F
S
-V
S
+V
S
+V
-V
S
71.5K
0.001
µ
F
R
SET
Comp-
Gnd
4194
Comp+
R
-V
+V
OUT
OUT
0
0
R
4.7
µ
F
741
4.7
µ
F**
+V = +15V
OUT
To Additional
Op Amps
(Typically 180 741s)
-V = -15V
To Additional
Op Amps
OUT
65-0204
OUT
R (k
½
) = 2.5 V
O
65-1725
Optional Tracking
Adjustment
100K
R3
100K
6
8
1
+V
-V
o
o
Bal
RC4194K
Binary Inputs
MSB
LSB
5
6 7 8 9 10 11 12
Adjust R2 for -19.92V at -V
OUT
with all "1s" at binary inputs,
then optionally adjust R3 for +19.92V at +V
OUT
NC
R1
2.49K
O
I
4
2
B8
B1
Ref-
V
Ref+ -V
Comp
+V
I
I
O
O
S
S
LC
DAC-08
15
1
2
In
Out
Gnd
REF-02
4
R2
250
4.87K
C
-V
S
C
14
3
16
13
0.01
µ
F
0.001
6
+V = +25V
Comp
+V
+V
7
5
6
+V (0 to +19.92V)
10
µ
F
10
µ
F
-V (0 to -19.92V)
Comp-
+
-V
Gnd
R
R
RC4194K
0.001
-V = -25V
9
Case
4
V = 4 I R1
S
O
0
SET
S
OUT
OUT
OUT
S
S
O
1
2
3
-V
O