Datasheet

Data Sheet AD5172/AD5173
Rev. I | Page 15 of 28
TEST CIRCUITS
Figure 31 to Figure 38 illustrate the test circuits that define the test conditions used in the product specification tables (see Table 1 and Table 2).
V
MS
A
W
B
DUT
V+
V+ = V
DD
1LSB = V+/2
N
04103-015
Figure 31. Potentiometer Divider Nonlinearity Error (INL, DNL)
NC
I
W
V
MS
A
W
B
DUT
04103-016
NC = NO CONNECT
Figure 32. Resistor Position Nonlinearity Error (Rheostat Operation: R-INL, R-DNL)
V
MS1
I
W
= V
DD
/R
NOMINAL
V
MS2
V
W
R
W
= [V
MS1
– V
MS2
]/I
W
A
W
B
DUT
04103-017
Figure 33. Wiper Resistance
Δ
V
MS
%
PSS (%/%) =
PSRR (dB) = 20 log
DUT
( )
V
DD
V
A
V
MS
A
W
B
V+
Δ
V
DD
%
Δ
V
MS
Δ
V
DD
V+ = V
DD
± 10%
04103-018
Figure 34. Power Supply Sensitivity (PSS, PSSR)
+5V
–5V
W
A
2.5V
B
V
OUT
OFFSET
GND
DUT
AD8610
V
IN
04103-019
Figure 35. Test Circuit for Gain vs. Frequency
W
B
DUT
I
SW
CODE = 0x00
R
SW
=
0.1V
I
SW
0.1V
GND TO V
DD
04103-020
Figure 36. Incremental On Resistance
V
DD
A
W
B
DUT
GND
I
CM
V
CM
NC
NC
04103-021
NC = NO CONNECT
Figure 37. Common-Mode Leakage Current
V
IN
NC
W1
B1
B2
W2
RDAC1
A1
RDAC2
V
DD
V
SS
V
OUT
CTA = 20 log[V
OUT
/V
IN
]
NC = NO CONNECT
A2
04103-022
Figure 38. Analog Crosstalk