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AD5122A Datasheet(PDF) 16 Page - Analog Devices

Part No. AD5122A
Description  Quad Channel, 128-/256-Position, I2C Nonvolatile Digital Potentiometer
Download  28 Pages
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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AD5122A Datasheet(HTML) 16 Page - Analog Devices

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AD5123/AD5143
Data Sheet
Rev. A | Page 16 of 28
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100
200
300
400
500
600
0
1
2
3
4
5
VOLTAGE (V)
100kΩ, VDD = 2.3V
100kΩ, VDD = 2.7V
100kΩ, VDD = 3V
100kΩ, VDD = 3.6V
100kΩ, VDD = 5V
100kΩ, VDD = 5.5V
10kΩ, VDD = 2.3V
10kΩ, VDD = 2.7V
10kΩ, VDD = 3V
10kΩ, VDD = 3.6V
10kΩ, VDD = 5V
10kΩ, VDD = 5.5V
Figure 23. Incremental Wiper On Resistance vs. Positive Power Supply (VDD)
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5
6
7
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9
10
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20
40
60
80
100
120
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10
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40
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CODE (Decimal)
AD5143
AD5123
10k
Ω + 0pF
10k
Ω + 75pF
10k
Ω + 150pF
10k
Ω + 250pF
100k
Ω + 0pF
100k
Ω + 75pF
100k
Ω + 150pF
100k
Ω + 250pF
Figure 24. Maximum Bandwidth vs. Code and Net Capacitance
–0.1
0
0.1
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0.5
0.6
0.7
0.8
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5
10
15
TIME (µs)
0x80 TO 0x7F 100kΩ
0x80 TO 0x7F 10kΩ
Figure 25. Maximum Transition Glitch
0
0.2
0.4
0.6
0.8
1.0
1.2
0
0.0005
0.0010
0.0015
0.0020
0.0025
–400
–500
–600
–300 –200 –100
0
100
200
300
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500
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RESISTOR DRIFT (ppm)
Figure 26. Resistor Lifetime Drift
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
10kΩ, RDAC1
100kΩ, RDAC1
VDD = 5V ±10% AC
VSS = GND, VA = 4V, VB = GND
CODE = MIDSCALE
Figure 27. Power Supply Rejection Ratio (PSRR) vs. Frequency
–0.020
–0.015
–0.010
–0.005
0
0.005
0.010
0.015
0.020
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TIME (ns)
Figure 28. Digital Feedthrough


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