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AD5291 Datasheet(PDF) 21 Page - Analog Devices

Part # AD5291
Description  256-/1024-Position, Digital Potentiometers
PDF  30 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD5291 Datasheet(HTML) 21 Page - Analog Devices

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Data Sheet
AD5291/AD5292
TEST CIRCUITS
Figure 58 to Figure 63 define the test conditions used in the Specifications section.
A
W
B
NC
IW
DUT
VMS
NC = NO CONNECT
Figure 58. Resistor Position Nonlinearity Error
(Rheostat Operation; R-INL, R-DNL)
A
W
B
DUT
VMS
V+
V+ = VDD
1LSB = V+/2N
Figure 59. Potentiometer Divider Nonlinearity Error
(INL, DNL)
+
–
DUT
CODE = 0x00
0.1V
VSS TO VDD
RWB=
0.1V
IWB
RW =
RWB
2
IWB
W
B
A = NC
Figure 60. Wiper Resistance
A
W
B
VMS
~
VA
VDD
V+
V+ = VDD ± 10%
ΔVMS%
ΔVDD%
PSS (%/%) =
PSRR (dB) = 20 log
ΔVMS
ΔVDD
Figure 61. Power Supply Sensitivity (PSS, PSRR)
OFFSET
GND
A
B
DUT
W
+15V
VIN
VOUT
OP42
–15V
2.5V
Figure 62. Gain vs. Frequency
VSS
ICM
W
B
VDD
DUT
GND
A
NC = NO CONNECT
NC
–15V
GND
+15V
NC
+15V
+15V
–15V
–15V
GND
GND
GND
Figure 63. Common-Mode Leakage Current
Rev. E | Page 21 of 30



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