AD5232BRUZ10 Datasheet, PDF (12/24 Pages) Analog Devices – Nonvolatile Memory,Dual 256-Position Digital Potentiometer

AD5232
Data Sheet
TEST CIRCUITS
Figure 22 to Figure 32 define the test conditions that are used in the Specifications section.
NC
DUT
A
W
B
I_W
V_MS
A DUT B
V_IN
OFFSET
GND
5V
W
OP279
OFFSET BIAS
V_OUT
NC = NO CONNECT
Figure 22. Resistor Position Nonlinearity Error (Rheostat Operation; R-INL, R-DNL)
Figure 26. Inverting Gain
DUT
V+ = V_DD
A
1LSB = V+/2^N
V+
W
B
V_MS
Figure 23. Potentiometer Divider Nonlinearity Error (INL, DNL)
5V
OFFSET
GND
V_IN
W
OP279
A DUT B
OFFSET BIAS
Figure 27. Noninverting Gain
V_OUT
V_MS2
DUT
A
W
B
I_W = V_DD/R_NOMINAL
V_W
V_MS1 ^RW ^{= [V}MS1 ^{– V}MS2^]/IW
Figure 24. Wiper Resistance
V_A
V+ ~
V_DD
A
W
B
V_MS
V+ = V_DD ± 10%
( ) ^{PSRR (dB) = 20 LOG}
ΔV_MS
ΔV_DD
PSS (%/%) =
ΔV_MS%
ΔV_DD%
Figure 25. Power Supply Sensitivity (PSS, PSRR)
V_IN
OFFSET
GND
A
W
DUT
B
2.5V
+15V
OP42
–15V
Figure 28. Gain vs. Frequency
V_OUT
DUT
AW
B
A = NC
R_SW
=
0.1V
I_SW
CODE = 0x00
+
I_SW
0.1V
–
V_SS TO V_DD
Figure 29. Incremental On Resistance
Rev. C | Page 12 of 24