Datasheet

AD5220
–7–REV.
V+
DUT
V
MS
A
B
W
V+ = V
DD
1LSB = V+/128
Figure 27. Potentiometer Divider Nonlinearity Error Test
Circuit (INL, DNL)
NO CONNECT
I
W
DUT
V
MS
A
B
W
Figure 28. Resistor Position Nonlinearity Error (Rheostat
Operation; R-INL, R-DNL)
V
MS2
V
W
I
W
= V
DD
/R
NOMINAL
DUT
V
MS1
A
B
W
R
W
= [V
MS1
– V
MS2
]/I
W
␣ ␣ Figure 29.␣ Wiper Resistance Test Circuit
PSRR (dB) = 20 LOG ( ––––– )
PSS (%/%) = –––––––
DV
MS
DV
DD
DV
MS
%
DV
DD
%
V+ = V
DD
± 10%
V
DD
V
A
~
V+
V
MS
A
B
W
Figure 30. Power Supply Sensitivity Test Circuit (PSS,
PSRR)
~
A
B
V
IN
2.5V DC
OP279
+5V
V
OUT
DUT
W
OFFSET
GND
Figure 31. Inverting Programmable Gain Test Circuit
~
AB
V
IN
2.5V
OP279
+5V
V
OUT
DUT
W
OFFSET
GND
Figure 32. Noninverting Programmable Gain Test Circuit
A
B
2.5V
DUT
W
OFFSET
GND
~
V
IN
OP42
+15V
V
OUT
–15V
Figure 33. Gain vs. Frequency Test Circuit
I
SW
0 TO V
DD
R
SW
=
0.1V
I
SW
CODE = ØØ
H
0.1V
DUT
B
W
Figure 34. Incremental ON Resistance Test Circuit
Parametric Test Circuits–
A