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AD5121 Arkusz danych(PDF) 16 Page - Analog Devices

Numer części AD5121
Szczegółowy opis  Single Channel, 128-/256-Position, I2C/SPI, Nonvolatile Digital Potentiometer
PDF  32 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Producent  AD [Analog Devices]
Strona internetowa  http://www.analog.com
Logo AD - Analog Devices

AD5121 Arkusz danych(HTML) 16 Page - Analog Devices

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AD5121/AD5141
Data Sheet
Rev. C | Page 16 of 32
0
0.2
0.4
0.6
0.8
1.0
1.2
0
1
2
3
4
5
INPUT VOLTAGE (V)
I2C, VLOGIC = 1.8V
I2C, VLOGIC = 2.3V
I2C, VLOGIC = 3.3V
I2C, VLOGIC = 5V
I2C, VLOGIC = 5.5V
SPI, VLOGIC = 1.8V
SPI, VLOGIC = 2.3V
SPI, VLOGIC = 3.3V
SPI, VLOGIC = 5V
SPI, VLOGIC = 5.5V
Figure 20. ILOGIC Current vs. Digital Input Voltage
–60
–50
–40
–30
–20
–10
0
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
AD5121/AD5141
0x80 (0x40)
0x40 (0x20)
0x20 (0x10)
0x10 (0x08)
0x8 (0x04)
0x4 (0x02)
0x2 (0x01)
0x1 (0x00)
0x00
Figure 21. 10 kΩ Gain vs. Frequency vs. 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 22. 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 23. Normalized Phase Flatness vs. Frequency, RAB = 10 kΩ
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
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
AD5121/AD5141
Figure 24. 100 kΩ Gain vs. Frequency vs. 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 25. Total Harmonic Distortion Plus Noise (THD + N) vs. Amplitude



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