ISO122 Datasheet, PDF (12/15 Pages) Burr-Brown (TI) – Precision Lowest Cost ISOLATION AMPLIFIER

+15V
V_IN , up to
± 10V Swing
ISO
122P
9
7
8
V
OUT
10
2
16
1
–15
+5V
Regulator
0.1µF
MC78L05 1
2
0.1µF
3
1
–5V
Regulator
MC79L05
3
2
0.33µF 0.33µF
4
PWS740–3
To PWS740–2,–1
NOTE: The input supplies can be subregulated to ±5V to reduce
PSR related errors without reducing the ±10V input range.
FIGURE 10. Improved PSR Using External Regulator.
V
INPUT RANGE
S
(V)
(V)⁽¹⁾
20+
–2 to +10
15
–2 to +5
12
–2 to +2
V_S1 (+15V)
7
INA105
Difference Amp
2
5 _10kΩ
R₁
R₂
+V_S2 (+15V)
Signal Source
V_IN
+ ^RS
3
R₃
R₄
4
Reference
6
1
R_C(1)
IN4689
5.1V
15 _In ¹
9
I_IS_SO_O
1¹12²22²2P^P
Gnd 10
16
2
–V_S1
7
V_OUT = V_IN
8
Com 2
–V_S2 (–15V)
NOTE: (1) Select to match R_S .
NOTE: Since the amplifier is unity gain, the input
range is also the output range. The output can go to
–2V since the output section of the ISO amp operates
from dual supplies.
FIGURE 11. Single Supply Operation of the ISO122P Isolation Amplifier. For additional information see AB-009.
®
ISO122
12