Datasheet

AD5291/AD5292
Rev. D | Page 21 of 32
TEST CIRCUITS
Figure 58 to Figure 63 define the test conditions used in the Specifications section.
A
W
B
NC
I
W
DUT
V
MS
NC = NO CONNECT
07674-041
Figure 58. Resistor Position Nonlinearity Error
(Rheostat Operation; R-INL, R-DNL)
A
W
B
DUT
V
MS
V+
V
+ = V
DD
1LSB = V+/2
N
07674-042
Figure 59. Potentiometer Divider Nonlinearity Error
(INL, DNL)
+
–
DUT
CODE = 0x00
0.1V
V
SS
TO V
DD
R
WB
=
0.1
V
I
WB
R
W
=
R
WB
2
I
WB
W
B
A = NC
0
7674-043
Figure 60. Wiper Resistance
A
W
B
V
MS
~
V
A
V
DD
V+
V+ = V
DD
± 10%
V
MS
%
V
DD
%
PSS (%/%) =
PSRR (dB) = 20 log
V
MS
V
DD
07674-044
Figure 61. Power Supply Sensitivity (PSS, PSRR)
OFFSET
GND
A
B
DUT
W
+15
V
V
IN
V
OUT
OP42
–15V
2.5V
0
7674-047
Figure 62. Gain vs. Frequency
V
SS
I
CM
W
B
V
DD
DUT
GND
A
NC = NO CONNECT
NC
–15V
GND
+15V
NC
+15
V
+15V
–15V
–15V
GND
GND
GND
07674-048
Figure 63. Common-Mode Leakage Current