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AD5231 데이터시트(PDF) 13 Page - Analog Devices

부품명 AD5231
상세설명  Nonvolatile Memory, 1024-Position Digital Potentiometer
PDF  28 Pages
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제조업체  AD [Analog Devices]
홈페이지  http://www.analog.com
Logo AD - Analog Devices

AD5231 데이터시트(HTML) 13 Page - Analog Devices

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Data Sheet
AD5231
Rev. D | Page 13 of 28
TEST CIRCUITS
Figure 26 to Figure 35 define the test conditions used in the specifications.
A
W
B
NC
IW
DUT
VMS
NC = NO CONNECT
Figure 26. Resistor Position Nonlinearity Error
(Rheostat Operation; R-INL, R-DNL)
A
W
B
DUT
VMS
V+
V+ = VDD
1LSB = V+/2N
Figure 27. Potentiometer Divider Nonlinearity Error (INL, DNL)
A
W
B
DUT
IW
VMS1
VMS2
VW
RW = [VMS1 – VMS2]/IW
Figure 28. Wiper Resistance
A
W
B
VMS
VA
VDD
V+
V+ = VDD ±10%
PSRR (dB) = 20 log
ΔVMS
ΔVDD
PSS (%/%) =
ΔVMS%
ΔVDD%
Figure 29. Power Supply Sensitivity (PSS, PSRR)
OFFSET BIAS
OFFSET
GND
A
B
DUT
W
5V
VIN
VOUT
OP279
Figure 30. Inverting Gain
OFFSET BIAS
OFFSET
GND
A
B
DUT
W
5V
VIN
VOUT
OP279
Figure 31. Noninverting Gain
OFFSET
GND
A
B
DUT
W
+15V
VOUT
VIN
OP42
–15V
+2.5V
Figure 32. Gain vs. Frequency
+
–
DUT
NC
CODE = 0x000
0.1V
VBIAS
RSW =
0.1V
ISW
ISW
W
B
A
NC = NO CONNECT
Figure 33. Incremental On Resistance
ICM
VCM
W
B
VDD
DUT
NC
NC
GND
VSS
A
NC = NO CONNECT
Figure 34. Common-Mode Leakage Current
200µA
IOL
200µA
IOH
VOH (MIN)
OR
VOL (MAX)
TO OUTPUT
PIN
CL
50pF
Figure 35. Load Circuit for Measuring VOH and VOL (The diode bridge test
circuit is equivalent to the application circuit with RPULL-UP of 2.2 kΩ)



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