11

®

3650/52

ous. The nonrecurrent pulse rating of the isolation barrier is

5000Vpk, since each unit is factory tested at 5000Vpk. If the

isolation barrier is to be subjected to higher voltages a gas

filled surge voltage protection device can be used. For

multichannel operation, two 3652s can be powered by one

Model 722 isolated DC/DC converter. The total leakage

current for both channels at 240V 60Hz would still be less

than 2

µA.

The block diagram in Figure 10 shows the use of isolation

amplifiers in SCR control application.

FIGURE 9. 3652 Used in Patient Monitoring Application (ECG, VCG, EMG Amplifier).

+15VDC

9

10

12

+V

O

C

–V

O

722

1.3k

Ω

17

23

20

26

–15VDC

V

OUT

To Monitor

Output

Common

P+

V+

E

V–

25k

Ω

25k

Ω

8

11

14

Input Common

6

1

12

+5kV

3652

+I

R

–I

R

Input

Common

Isolated DC/DC Converter

V

es = 20e

s

10

6

50k

e

s

–6kV

–3kV

–3kV