Datasheet

AD5232 Data Sheet
Rev. C | Page 12 of 24
TEST CIRCUITS
Figure 22 to Figure 32 define the test conditions that are used in the Specifications section.
A
W
B
NC
DUT
NC = NO CONNECT
02618-022
I
W
V
MS
Figure 22. Resistor Position Nonlinearity Error (Rheostat Operation; R-INL, R-DNL)
A
W
B
DUT
V+
02618-023
V+ = V
DD
1LSB = V+/2
N
V
MS
Figure 23. Potentiometer Divider Nonlinearity Error (INL, DNL)
A
W
B
DUT
I
W
= V
DD
/R
NOMINAL
02618-024
V
MS1
V
W
R
W
= [V
MS1
– V
MS2
]/I
W
V
MS2
Figure 24. Wiper Resistance
A
W
B
V+ = V
DD
± 10%
PSS (%/%) =
~
V
A
V+
02618-025
PSRR (dB) = 20 LOG
ΔV
MS
ΔV
DD
( )
ΔV
MS
%
ΔV
DD
%
V
MS
V
DD
Figure 25. Power Supply Sensitivity (PSS, PSRR)
OFFSET BIAS
ABDUT
W
5V
OP279
02618-026
V
OUT
V
IN
OFFSET
GND
Figure 26. Inverting Gain
OFFSET BIAS
ABDUT
W
5V
02618-027
V
OUT
V
IN
OFFSET
GND
OP279
Figure 27. Noninverting Gain
A
B
DUT
W
+15V
OP42
–15V
2.5V
02618-028
V
OUT
V
IN
OFFSET
GND
Figure 28. Gain vs. Frequency
+
–
DUT
CODE = 0x00
0.1V
V
SS
TO V
DD
W
B
A
A = NC
02618-029
R
SW
=
0.1V
I
SW
I
SW
Figure 29. Incremental On Resistance