ad5160 Analog Devices, Inc., ad5160 Datasheet - Page 10

• Manufacturer Part Number: ad5160
• Description: 256-position Spi Compatible Digital Potentiometer
• Manufacturer: Analog Devices, Inc.

AD5160
TEST CIRCUITS
Figure 27 to Figure 35 illustrate the test circuits that define the
test conditions used in the product specification tables.
Figure 27. Test Circuit for Potentiometer Divider Nonlinearity Error (INL, DNL)
Figure 30. Test Circuit for Power Supply Sensitivity (PSS, PSSR)
Figure 28. Test Circuit for Resistor Position Nonlinearity Error
V
V+
MS2
OFFSET
GND
Figure 29. Test Circuit for Wiper Resistance
V
DD
Figure 31. Test Circuit for Inverting Gain
V+
NO CONNECT
(Rheostat Operation; R-INL, R-DNL)
V
A
A
B
A
B
V
DUT
IN
W
W
A
B
DUT
A
A
DUT
B
W
OFFSET
BIAS
W
DUT
V
W
V
W
B
MS1
V
MS
PSRR (dB) = 20 LOG
PSS (%/%) =
V+ = V
I
W
OP279
= V
1LSB = V+/2
V+ = V
V
R
5V
V
MS
DD
DD
W
MS
= [V
/R
DD
I
10%
W
NOMINAL
MS1
∆V
∆V
N
MS
DD
– V
V
%
%
OUT
MS2
(
∆V
∆V
]/I
MS
DD
W
)
Rev. 0 | Page 10 of 16
Figure 35. Test Circuit for Common-Mode Leakage current
OFFSET
Figure 34. Test Circuit for Incremental ON Resistance
GND
OFFSET
Figure 33. Test Circuit for Gain vs. Frequency
Figure 32. Test Circuit for Noninverting Gain
V
GND
V
V
DD
SS
IN
2.5V
DUT
GND
DUT
B
V
W
IN
DUT
OFFSET
BIAS
A
NC
NC
A
B
I
B
A
SW
DUT
W
NC = NO CONNECT
V
SS
CODE = 0x00
W
R
SW
W
TO V
B
=
OP279
0.1V
DD
I
I
SW
5V
CM
AD8610
–15V
+15V
0.1V
V
V
OUT
CM
V
OUT