C
2
1000pF
Isolation Barrier
R
1
4.75kΩ
V
IN
ISO124
–V
S2
+V
S2
Gnd1
–V
S1
+V
S1
10µH
1µF
1µF 1µF 1µF
10µH
±V
S1
10µH
1µF
1µF 1µF 1µF
10µH
±V
S2
Gnd2
R
2
9.76kΩ
OPA237
V
OUT
= V
IN
C
1
220pF
FIGURE 4. Optional
π
Filter to Minimize Power Supply Feedthrough Noise; Output Filter to Remove 500kHz Carrier Ripple.
For more information concerning output filter refer to AB-023 and AB-034.
This Section Repeated 49 Times.
ISO124
10kΩ
e
1
= 12V
10kΩ
15
10
e
2
= 12V
16
2
–V
+V
1
9
7
8
V=
e
1
2
Charge/Discharge Control
Multiplexer
Control
Section
ISO124
+V
15
1
9
e
50
= 12V
10kΩ
10
2
10kΩ
16
–V
3
1
25kΩ
7
8
2
25kΩ
+V –V
7
INA105
25kΩ
5
4
e
49
= 12V
6
25kΩ
V=
e
50
2
FIGURE 5. Battery Monitor for a 600V Battery Power System. (Derives input power from the battery.)
®
ISO124
8
BURR-BROWN [ BURR-BROWN CORPORATION ]
