AD5220

–7–

REV.

V+

DUT

A

B

W

1LSB = V+/128

Figure 27. Potentiometer Divider Nonlinearity Error Test

Circuit (INL, DNL)

NO CONNECT

DUT

A

B

W

Figure 28. Resistor Position Nonlinearity Error (Rheostat

Operation; R-INL, R-DNL)

DUT

A

B

W

Figure 29. Wiper Resistance Test Circuit

PSRR (dB) = 20 LOG

PSS (%/%) = –––––––

~

V+

A

B

W

Figure 30. Power Supply Sensitivity Test Circuit (PSS,

PSRR)

~

A

B

2.5V DC

OP279

+5V

DUT

W

OFFSET

GND

Figure 31. Inverting Programmable Gain Test Circuit

~

AB

2.5V

OP279

+5V

DUT

W

OFFSET

GND

Figure 32. Noninverting Programmable Gain Test Circuit

A

B

2.5V

DUT

W

OFFSET

GND

~

OP42

+15V

–15V

Figure 33. Gain vs. Frequency Test Circuit

0.1V

0.1V

DUT

B

W

Figure 34. Incremental ON Resistance Test Circuit

Parametric Test Circuits–

A