AD5293

Rev. 0 | Page 13 of 20

TEST CIRCUITS

Figure 26 to Figure 31 define the test conditions used in the Specifications section.

A

W

B

NC

DUT

NC = NO CONNECT

Figure 26. Resistor Position Nonlinearity Error

(Rheostat Operation: R-INL, R-DNL)

A

W

B

DUT

V+

Figure 27. Potentiometer Divider Nonlinearity Error (INL, DNL)

+

–

DUT

CODE = 0x00

0.1V

0.1V

2

W

B

A = NC

Figure 28. Wiper Resistance

A

W

B

~

V+

PSS (%/%) =

PSRR (dB) = 20 log

Figure 29. Power Supply Sensitivity (PSS, PSRR)

OFFSET

GND

A

B

DUT

W

+15V

OP42

–15V

2.5V

Figure 30. Gain vs. Frequency

W

B

DUT

GND

A

NC = NO CONNECT

NC

–15V

GND

+15V

NC

+15V

+15V

–15V

–15V

GND

GND

GND

Figure 31. Common-Mode Leakage Current