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AD5112 Datasheet(PDF) 16 Page - Analog Devices

Part No. AD5112
Description  Single-Channel, 128-/64-/32-Position, I2C, ±8% Resistor Tolerance, Nonvolatile Digital Potentiometer
Download  28 Pages
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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AD5112 Datasheet(HTML) 16 Page - Analog Devices

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AD5110/AD5112/AD5114
Data Sheet
Rev. 0 | Page 16 of 28
–60
–50
–40
–30
–10
0
10k
1M
100k
FREQUENCY (Hz)
–20
–80
–70
0x40
0x10
0x04
0x02
0x08
0x01
0x20
0x00
(0x20)
(0x08)
(0x02)
(0x01)
(0x04)
(0x00)
(0x10)
[0x10]
[0x04]
[0x01]
[0x00]
[0x02]
[0x08]
AD5110 (AD5112) [AD5114]
Figure 23. 80 kΩ Gain vs. Frequency vs. Code
–80
–70
–60
–50
–40
–30
–20
–10
0
10k
100k
1M
10M
FREQUENCY (Hz)
FULL SCALE
HALF SCALE
QUARTER SCALE
AD5110
RAB = 10kΩ
Figure 24. Normalized Phase Flatness vs. Frequency
0
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
FREQUENCY (Hz)
20
200
2k
20k
200k
10kΩ
5kΩ
80kΩ
VDD = 5V,
VA = 2.5V + 1VRMS
VB = 2.5V
CODE = HALF SCALE
NOISE FILTER = 22kHz
Figure 25. Total Harmonic Distortion + Noise (THD + N) vs. Frequency
0
10
20
30
40
50
60
70
80
CODE (Decimal)
5k + 250pF
10k + 75pF
10k + 150pF
10k + 250pF
80k + 0pF
80k + 75pF
80k + 150pF
80k + 250pF
5k + 0pF
5k + 75pF
5k + 150pF
10k + 0pF
0
10
20
30
40
50
60
0
5
10
15
20
25
30
0
5
10
15
AD5110
AD5112
AD5114
Figure 26. Maximum Bandwidth vs. Code vs. Net Capacitance
0
30
60
90
120
150
0
1
2
3
VDD (V)
4
5
6
5.5V
5V
3.3V
2.7V
2.3V
TEMPERATURE = 25°C
Figure 27. Incremental Wiper On Resistance vs. VDD
AMPLITUDE (V rms)
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
0.001
0.01
0.1
1
10kΩ
5kΩ
80kΩ
VDD = 5V,
VA = 2.5V + VIN
VB = 2.5V
fIN = 1kHz
CODE = HALF SCALE
NOISE FILTER = 22kHz
Figure 28. Total Harmonic Distortion + Noise (THD + N) vs. Amplitude


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