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AD5272 Datasheet(PDF) 17 Page - Analog Devices

Part # AD5272
Description  1024-/256-Position, 1% Resistor Tolerance Error, I2C Interface and 50-TP Memory Digital Rheostat
PDF  28 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD5272 Datasheet(HTML) 17 Page - Analog Devices

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Data Sheet
AD5272/AD5274
Rev. D | Page 17 of 28
TEST CIRCUITS
Figure 38 to Figure 42 define the test conditions used in the Specifications section.
VMS
IW
A
W
DUT
Figure 38. Resistor Position Nonlinearity Error
(Rheostat Operation; R-INL, R-DNL)
RWA =
VMS
IW
RW =
RWA
2
A
W
IW
DUT
VMS
CODE = 0x00
Figure 39. Wiper Resistance
VDD
IW
VMS
A
W
V+
ΔVMS%
ΔVDD%
VMS
VDD
V+ = VDD ±10%
PSRR (dB) = 20 log
PSS (%/%) =
Figure 40. Power Supply Sensitivity (PSS, PSRR)
VMS
A
W
DUT
V
1GΩ
Figure 41. Gain vs. Frequency
ICM
DUT
W
A
NC = NO CONNECT
GND
+2.75V
NC
+2.75V
–2.75V
–2.75V
GND
GND
Figure 42. Common Leakage Current



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