ISO124

11

SBOS074C

www.ti.com

FIGURE 10. Single-Supply Operation of the ISO124 Isolation Amplifier. For additional information refer to Application Note

SBOA004.

FIGURE 9. Improved PSR Using External Regulator.

NOTE: The input supplies can be subregulated to

±5V to reduce

PSR related errors without reducing the

±10V input range.

10

7

9

8

2

V

OUT

+15V

–15V

V

±10V Swing

+5V

Regulator

MC78L05

–5V

Regulator

MC79L05

0.47

µF 0.47µF

0.1

µF

1

2

3

0.1

µF

0.47

µF

ISO124

3

1

2

16

1

7

6

5

21

DCP011515DB

or

DCV011515D

R

1

R

2

R

4

INA105

Difference Amp

R

3

R

S

2

3

4

IN4689

5.1V

Reference

5

7

6

1

V

IN

Signal Source

+

NOTE: (1) Select to match R .

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.

S

10k

Ω

15

–V

+V

V

16

–V

S1

Com 2

10

In

Gnd

(1)

V

S

(V)

20+

15

12

INPUT RANGE

–2 to +10

–2 to +5

–2 to +2

7

9

8

ISO124

2

1

V