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AD5121 Datasheet(PDF) 15 Page - Analog Devices

Part # AD5121
Description  Single Channel, 128-/256-Position, I2C/SPI, Nonvolatile Digital Potentiometer
PDF  32 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD5121 Datasheet(HTML) 15 Page - Analog Devices

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Data Sheet
AD5121/AD5141
Rev. 0 | Page 15 of 32
–0.15
–0.10
–0.05
0
0.05
0.10
0.15
0
50
100
CODE (Decimal)
10k
Ω, –40°C
10k
Ω, +25°C
10k
Ω, +125°C
100k
Ω, –40°C
100k
Ω, +25°C
100k
Ω, +125°C
Figure 14. INL vs. Code (AD5121)
–50
0
50
100
150
200
250
300
350
400
450
CODE (Decimal)
100k
Ω
10k
Ω
0
50
100
150
200
255
0
25
50
75
100
127
AD5121
AD5141
Figure 15. Potentiometer Mode Temperature Coefficient ((ΔVW/VW)/ΔT × 106)
vs. Code
0
100
200
300
400
500
600
700
800
–40
10
60
125
110
TEMPERATURE (°C)
IDD, VDD = 2.3V
IDD, VDD = 3.3V
IDD, VDD = 5V
ILOGIC, VLOGIC = 2.3V
ILOGIC, VLOGIC = 3.3V
ILOGIC, VLOGIC = 5V
VDD = VLOGIC
VSS = GND
Figure 16. Supply Current vs. Temperature
–0.14
–0.12
–0.10
–0.08
–0.06
–0.04
–0.02
0
0.02
0.04
0.06
0
50
100
CODE (Decimal)
10k
Ω, –40°C
10k
Ω, +25°C
10k
Ω, +125°C
100k
Ω, –40°C
100k
Ω, +25°C
100k
Ω, +125°C
Figure 17. DNL vs. Code (AD5121)
–50
0
50
100
150
200
250
300
350
400
450
10kΩ
100kΩ
CODE (Decimal)
0
50
100
150
200
255
0
25
50
75
100
127
AD5122
AD5142
Figure 18. Rheostat Mode Temperature Coefficient ((ΔRWB/RWB)/ΔT × 106)
vs. Code
0
200
400
600
800
1000
1200
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 19. ILOGIC Current vs. Digital Input Voltage



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