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AD5282BRUZ200-R72 데이터시트(PDF) 24 Page - Analog Devices

부품명 AD5282BRUZ200-R72
상세설명  Single/Dual,15 V/5 V,256-Position I2C-Compatible Digital Potentiometer
PDF  28 Pages
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제조업체  AD [Analog Devices]
홈페이지  http://www.analog.com
Logo AD - Analog Devices

AD5282BRUZ200-R72 데이터시트(HTML) 24 Page - Analog Devices

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AD5280/AD5282
Rev. C | Page 24 of
28
CW
85pF
RDAC CIRCUIT SIMULATION MODEL
The internal parasitic capacitances and the external capacitive
loads dominate the ac characteristics of the RDACs. Configured
as a potentiometer divider, the −3 dB bandwidth of the AD5280
(20 kΩ resistor) measures 310 kHz at half scale. Figure 24
provides the Bode plot characteristics of the three available
resistor versions: 20 kΩ, 50 kΩ, and 200 kΩ. A parasitic
simulation model is shown in Figure 65. A macro model net list
for the 20 kΩ RDAC is provided.
CA
25pF
CA
25pF
RDAC
20kΩ
A
B
Figure 65. RDAC Circuit Simulation Model for RDAC = 20 kΩ
MACRO MODEL NET LIST FOR RDAC
.PARAM D=256, RDAC=20E3
*
.SUBCKT DPOT (A,W,B)
*
CA
A
0
25E-12
RWA
A
W
{(1-D/256)*RDAC+60}
CW
W
0
55E-12
RWB
W
B
{D/256*RDAC+60}
CB
B
0
25E-12
*
.ENDS DPOT



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