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AD5124 Datasheet(PDF) 20 Page - Analog Devices

Part # AD5124
Description  Quad Channel, 128-/256-Position, I2C/SPI, Nonvolatile Digital Potentiometer
PDF  36 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD5124 Datasheet(HTML) 20 Page - Analog Devices

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AD5124/AD5144/AD5144A
Data Sheet
Rev. B | Page 20 of 36
–80
–90
–70
–60
–50
–40
–30
–20
–10
0
10
10
100
1k
10k
100k
1M
FREQUENCY (Hz)
QUARTER SCALE
MIDSCALE
FULL-SCALE
VDD/VSS = ±2.5V
RAB = 100kΩ
Figure 30. Normalized Phase Flatness vs. Frequency, RAB = 100 kΩ
0
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 31. Incremental Wiper On Resistance vs. Positive Power Supply (VDD)
0
1
2
3
4
5
6
7
8
9
10
0
20
40
60
80
100
120
0
10
20
30
40
50
60
CODE (Decimal)
AD5144/
AD5144A
AD5124
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 32. Maximum Bandwidth vs. Code vs. Net Capacitance
–0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0
5
10
15
TIME (µs)
0x80 TO 0x7F, 100kΩ
0x80 TO 0x7F, 10kΩ
VDD/VSS = ±2.5V
VA = VDD
VB = VSS
Figure 33. 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
400
500
600
RESISTOR DRIFT (ppm)
Figure 34. Resistor Lifetime Drift
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
10kΩ
100kΩ
VDD = 5V ±10% AC
VSS = GND, VA = 4V, VB = GND
CODE = MIDSCALE
Figure 35. Power Supply Rejection Ratio (PSRR) vs. Frequency



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