AD5280BRUZ200 Analog Devices Inc, AD5280BRUZ200 Datasheet - Page 24

• Manufacturer Part Number: AD5280BRUZ200
• Description: IC,Digital Potentiometer,TSSOP,14PIN,PLASTIC
• Manufacturer: Analog Devices Inc

Specifications of AD5280BRUZ200

• Taps: 256
• Resistance (ohms): 200K
• Number Of Circuits: 1
• Temperature Coefficient: 30 ppm/°C Typical
• Memory Type: Volatile
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 4.5 V ~ 16.5 V, ±4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 14-TSSOP
• Resistance In Ohms: 200K
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD5280/AD5282
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.
Figure 65. RDAC Circuit Simulation Model for RDAC = 20 kΩ
A
RDAC
20kΩ
B
Rev. C | Page 24 of 28
MACRO MODEL NET LIST FOR RDAC
.PARAM D=256, RDAC=20E3
*
.SUBCKT DPOT (A,W,B)
*
CA
RWA
CW
RWB
CB
*
.ENDS DPOT
A
A
W
W
B
0
W
0
B
0
25E-12
{(1-D/256)*RDAC+60}
55E-12
{D/256*RDAC+60}
25E-12