Datasheet

AD5280/AD5282
Rev. C | Page 12 of 28
TEST CIRCUITS
Figure 33 to Figure 43 define the test conditions used in the product specification table.
A
W
DUT
B
V+ = V
DD
1LSB = V+/2
N
V+
W
DUT
V
MS
02929-031
Figure 33. Potentiometer Divider Nonlinearity Error (INL, DNL)
A
W
DUT
I
W
NO CONNECT
B
V
MS
02929-032
Figure 34. Resistor Position Nonlinearity Error
(Rheostat Operation; R-INL, R-DNL)
A
W
B
DUT
V
MS2
V
MS1
02929-033
V
W
I
W
= V
DD
/R
NOMINAL
R
W
= [V
MS1
–V
MS2
]/I
W
Figure 35. Wiper Resistance
A
W
V
DD
V
A
B
V+
V
MS
02929-034
V+ = V
DD
±10%
PSRR (dB) = 20 LOG
( )
PSS (%/%) =
V
MS
V
DD
V
MS
%
V
DD
%
Figure 36. Power Supply Sensitivity (PSS, PSSR)
A
5V
V
OUT
OFFSET
GND
OFFSET
BIAS
V
IN
02929-035
B
OP279
Figure 37. Inverting Gain
W
V
OUT
OFFSET
GND
OFFSET
BIAS
V
IN
02929-036
DUT
OP279
5V
BA
Figure 38. Noninverting Gain
V
OUT
OFFSET
GND
2.5V
V
IN
DUT
02929-037
A
W
AD8610
+15V
–15V
B
Figure 39. Gain vs. Frequency
W
B
V
SS
TO V
DD
DUT
I
SW
0.1V
R
SW
=
0.1V
I
SW
02929-038
Figure 40. Incremental On Resistance