AD5245

Rev. B | Page 12 of 20

TEST CIRCUITS

Figure 28 to Figure 34 illustrate the test circuits that define the test conditions used in the product specification tables (Table 1 through Table 3).

A

W

B

DUT

V+

Figure 28. Test Circuit for Potentiometer Divider Nonlinearity Error

(INL, DNL)

NO CONNECT

A W

B

DUT

Figure 29. Test Circuit for Resistor Position Nonlinearity Error

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

A

W

B

DUT

Figure 30. Test Circuit for Wiper Resistance

PSS (%/%) =

PSRR (dB) = 20 log

MS

DD

(

)

A

W

B

V+

∆V

∆V

∆V

Figure 31. Test Circuit for Power Supply Sensitivity (PSS, PSSR)

+15V

–15V

W

A

2.5V

B

OFFSET

GND

DUT

AD8610

Figure 32. Test Circuit for Gain vs. Frequency

W

B

DUT

CODE = 0x00

0.1V

0.1V

Figure 33. Test Circuit for Incremental On Resistance

W

B

A

NC

GND

NC

DUT

NC = NO CONNECT

Figure 34. Test Circuit for Common-Mode Leakage Current