ISO120 Datasheet, PDF (13/16 Pages) Burr-Brown (TI) – Precision Low Cost ISOLATION AMPLIFIER

e₁ =12V
e₂ =12V
10kΩ
10kΩ
23 ³
ISO
21 ¹²⁰
22
4
24
+V
15 ^5kΩ
11 ₁₀
9, 12
16
–V
V = ^e1
2
Charge/Discharge Control
e₄₉ =12V
e₅₀ =12V
10kΩ
10kΩ
23 ³
21
ISO
120
22
4
24
+V
15 ^5kΩ
11 ₁₀ ^25kΩ
9, 12 2
16
–V
25kΩ
3
1
25kΩ
+V –V
74
25kΩ
INA105
5
6
V = ^e50
2
FIGURE 10. Battery Monitor for a 600V Battery Power System.
Control
Section
1mA
1mA
R₁
100Ω
3
R_S
5
150Ω
6
4
RTD
(PT100)
11 _{10 8}
XTR101
7
R₂
2.5kΩ
0.01µF
2mA
R_L
250Ω
NOTE: Some ISO120 connections left out for clarity.
FIGURE 11. Isolated 4-20mA Instrument Loop. (RTD shown).
+V_S = 15V on PWS740
7
3
5
6
250Ω INA105
1
24
3
23
21 ^ISO
120
22
4
24
11
10
9
V_OUT
Sync
Gnd
–V_S = –15V
on PWS740
13
ISO120/121