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PDF ( 数据手册 , 数据表 ) AD5220

零件编号 AD5220
描述 Increment/Decrement Digital Potentiometer
制造商 Analog Devices
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AD5220 数据手册, 描述, 功能







AD5220 pdf, 数据表
Parametric Test Circuits–AD5220
DUT
A
V+ W
B
V+ = VDD
1LSB = V+/128
VMS
OFFSET
GND
A DUT B
~VIN
+5V
W
OP279
2.5V DC
VOUT
Figure 27. Potentiometer Divider Nonlinearity Error Test
Circuit (INL, DNL)
Figure 31. Inverting Programmable Gain Test Circuit
NO CONNECT
DUT
A
W
B
IW
VMS
OFFSET
GND
~VIN W
+5V
OP279
A DUT B
2.5V
VOUT
Figure 28. Resistor Position Nonlinearity Error (Rheostat
Operation; R-INL, R-DNL)
Figure 32. Noninverting Programmable Gain Test Circuit
VMS2
DUT
A
W
B
IW = VDD/RNOMINAL
VW
VMS1
RW = [VMS1 – VMS2]/IW
␣ ␣ Figure 29.␣ Wiper Resistance Test Circuit
A
~VIN DUT
W
OFFSET
GND
B
2.5V
+15V
OP42
VOUT
–15V
Figure 33. Gain vs. Frequency Test Circuit
VA
~ VDD
V+
A
W
B
V+ = VDD ± 10%
( )VMS
PSRR (dB) = 20 LOG –––––
VDD
VMS
PSS (%/%) = ––V–M––S–%–
VDD%
Figure 30. Power Supply Sensitivity Test Circuit (PSS,
PSRR)
DUT
W
B
RSW
=
0.1V
ISW
CODE = ØØH
ISW
0.1V
0 TO VDD
Figure 34. Incremental ON Resistance Test Circuit
REV. A
–7–














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