AD5292 Analog Devices, AD5292 Datasheet - Page 17

• Manufacturer Part Number: AD5292
• Description: (AD5291 / AD5292) Digital Potentiometer
• Manufacturer: Analog Devices

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TEST CIRCUITS
Figure 37 to Figure 42 define the test conditions used in the Specifications section.
Figure 38. Potentiometer Divider Nonlinearity Error
Figure 37. Resistor Position Nonlinearity Error
DUT
A = NC
V+
B
(Rheostat Operation; R-INL, R-DNL)
W
Figure 39. Wiper Resistance
NC
A
B
DUT
I
WB
B
A
DUT
W
V
NC = NO CONNECT
CODE = 0x00
SS
W
(INL, DNL)
TO V
DD
V
MS
V+ = V
1LSB = V+/2
+
–
I
W
V
R
0.1V
R
DD
MS
WB
W
=
=
0.1V
R
N
I
WB
WB
2
Rev. 0 | Page 17 of 28
OFFSET
V+
GND
~
V
DUT
V
Figure 40. Power Supply Sensitivity (PSS, PSRR)
DD
V
SS
V
DD
Figure 42. Common-Mode Leakage Current
NC
NC
IN
GND
+15V
+15V
V
A
A
B
Figure 41. Gain vs. Frequency
W
A
B
DUT
–15V
–15V
2.5V
W
V
GND
GND
MS
A
B
W
I
CM
NC = NO CONNECT
V+ = V
PSRR (dB) = 20 log
PSS (%/%) =
OP42
AD5291/AD5292
+15V
–15V
DD
GND
GND
± 10%
ΔV
ΔV
MS
DD
+15V
–15V
%
%
ΔV
ΔV
V
OUT
MS
DD