DG300A/301A/302A/303A

10

Siliconix

S-52880—Rev. C, 28-Apr-97

Applications (Cont’d)

Diff. IN B

+15 V

+15 V

Diff. IN A

DG301A

DG302A

GND

+15 V

–15 V

–15 V

+15 V

–15 V

CMOS Logic

Input Select

High = Diff. IN B

CMOS Logic

Gain Select

16 k

W

R

1.5 k

W

75 k

W

75 k

W

75 k

W

75 k

W

75 k

W

67 k

W

50 k

W

Voltage gain of the instrumentation amplifier is:

Figure 6.

Low Power Instrumentation Amplifier with Digitally Selectable Inputs and Gain

+

–