AD5243 AD [Analog Devices], AD5243 Datasheet - Page 12

• Manufacturer Part Number: AD5243
• Description: Dual 256-Position I2C Compatible Digital Potentiometer
• Manufacturer: AD [Analog Devices]

AD5243/AD5248
TEST CIRCUITS
Figure 29 through Figure 35 illustrate the test circuits that define the test conditions used in the product specification tables.
Figure 29. Test Circuit for Potentiometer Divider Nonlinearity Error
V
Figure 32. Test Circuit for Power Supply Sensitivity(PSS, PSSR)
Figure 30. Test Circuit for Resistor Position Nonlinearity Error
MS2
V+
∆V
Figure 31. Test Circuit for Wiper Resistance
DD
V+
NO CONNECT
V
(Rheostat Operation; R-INL, R-DNL)
A
B
A
A
B
DUT
DUT
W
W
A W
B
A
B
DUT
DUT
W
V
(INL, DNL)
W
V
MS1
V
MS
I
W
V+ = V
PSRR (dB) = 20 LOG
PSS (%/%) =
= V
R
V+ = V
1LSB = V+/2
V
DD
W
MS
V
DD
MS
/R
= [V
NOMINAL
I
± 10%
DD
W
MS1
∆V
∆V
– V
MS
DD
N
MS2
%
%
(
]/I
∆V
∆V
W
DD
MS
)
Rev. 0 | Page 12 of 20
OFFSET
Figure 35. Test Circuit for Common-Mode Leakage Current
GND
Figure 34. Test Circuit for Incremental On Resistance
V
Figure 33. Test Circuit for Gain vs. Frequency
DD
V
IN
GND
2.5V
DUT
B
DUT
W
NC
NC
A
B
A
B
I
SW
W
NC = NO CONNECT
DUT
V
SS
CODE = 0x00
W
R
SW
TO V
=
0.1V
DD
I
I
SW
CM
AD8610
+15V
–15V
0.1V
V
CM
V
OUT