Datasheet

13
ISO120/121
FIGURE 10. Battery Monitor for a 600V Battery Power System.
FIGURE 11. Isolated 4-20mA Instrument Loop. (RTD shown).
21
22
23
3
15
11
4
e
50
=12V
9, 12
10
16
–V
24
5kΩ
+V
21
22
23
3
15
11
4
10kΩ
9, 12
10
16
–V
24
5kΩ
+V
10kΩ
e
49
=12V
e
2
=12V
e
1
=12V
10kΩ
10kΩ
Charge/Discharge Control
INA105
25kΩ
25kΩ
25kΩ
25kΩ
2
3
1
e
50
V =
2
+V –V
74
5
6
e
1
V =
2
Multiplexer
Control
Section
ISO
120
ISO
120
R
2
2.5kΩ
INA105
ISO
120
XTR101
R
S
150Ω
R
1
100Ω
3
5
6
4
7
8
10
11
0.01µF
RTD
(PT100)
1mA1mA
2mA
R
L
250Ω
250Ω
6
5
7
3
2
4
1
23
21
22
24
4
9
11
10
3
Sync
Gnd
–V
S
= –15V
on PWS740
V
OUT
+V
S
= 15V on PWS740
NOTE: Some ISO120 connections left out for clarity.