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AD5123 Datasheet(PDF) 15 Page - Analog Devices

Part # AD5123
Description  Quad Channel, 128-/256-Position, I2C, Nonvolatile Digital Potentiometer
PDF  28 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD5123 Datasheet(HTML) 15 Page - Analog Devices

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Data Sheet
AD5123/AD5143
Rev. B | Page 15 of 28
–60
–50
–40
–30
–20
–10
0
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
AD5143 (AD5123)
0x80 (0x40)
0x40 (0x20)
0x20 (0x10)
0x10 (0x08)
0x8 (0x04)
0x4 (0x02)
0x2 (0x01)
0x1 (0x00)
0x00
Figure 17. 10 kΩ Gain vs. Frequency and Code
–100
–90
–80
–70
–60
–50
–40
20
200
2k
20k
200k
FREQUENCY (Hz)
10k
Ω
100k
Ω
VDD/VSS = ±2.5V
VA = 1V rms
VB = GND
CODE = HALF SCALE
NOISE FILTER = 22kHz
Figure 18. Total Harmonic Distortion Plus Noise (THD + N) vs. Frequency
–100
–80
–60
–40
–20
0
20
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
QUARTER SCALE
MIDSCALE
FULL-SCALE
VDD/VSS = ±2.5V
RAB = 10kΩ
Figure 19. Normalized Phase Flatness vs. Frequency, RAB = 10 kΩ
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
10
FREQUENCY (Hz)
10
100
1k
10k
100k
1M
10M
0x80 (0x40)
0x40 (0x20)
0x20 (0x10)
0x10 (0x08)
0x8 (0x04)
0x4 (0x02)
0x2 (0x01)
0x1 (0x00)
0x00
AD5143 (AD5123)
Figure 20. 100 kΩ Gain vs. Frequency and Code
10k
Ω
100k
Ω
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
0.001
0.01
0.1
1
VOLTAGE (V rms)
VDD/VSS = ±2.5V
fIN = 1kHz
CODE = HALF SCALE
NOISE FILTER = 22kHz
Figure 21. Total Harmonic Distortion Plus Noise (THD + N) vs. Amplitude
–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 22. Normalized Phase Flatness vs. Frequency, RAB = 100 kΩ



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