Datasheet

AD8400/AD8402/AD8403
Rev. E | Page 19 of 32
TEST CIRCUITS
V+
DUT
V
MS
A
B
W
V+ = V
DD
1LSB = V+/256
01092-036
Figure 37. Potentiometer Divider Nonlinearity Error (INL, DNL)
DUT
V
MS
A
B
W
NO CONNECT
I
W
01092-037
Figure 38. Resistor Position Nonlinearity Error
(Rheostat Operations; R-INL, R-DNL)
A
W
B
DUT
V
MS1
V
W
I
W
=V
DD
/R
NOMINAL
V
MS2
R
W
=[V
MS1
–V
MS2
]/I
W
01092-038
Figure 39. Wiper Resistance
V+
A
B
W
~
V
A
V
MS
V
DD
V+ = V
DD
± 10%
PSRR (dB) = 20LOG
ΔV
MS
ΔV
DD
PSS (%/%) =
ΔV
MS
%
ΔV
DD
%
()
01092-039
Figure 40. Power Supply Sensitivity (PSS, PSRR)
A
V
IN
2.5V DC
OP279
5V
V
OUT
~
DUT
W
OFFSET
GND
B
01092-040
Figure 41. Inverting Programmable Gain
~
A
V
IN
2.5V
OP279
5
V
V
OUT
DUT
W
OFFSET
GND
B
01092-041
Figure 42. Noninverting Programmable Gain
~
B
A
V
IN
2.5V
+15V
V
OUT
DUT
W
–15V
O
FFSET
GND
OP42
01092-042
Figure 43. Gain vs. Frequency
DUT
I
SW
B
W
V
BIAS
R
SW
=
0.1
V
I
SW
CODE =
0.1V
A=NC
+
–
01092-043
H
Figure 44. Incremental On Resistance