Digital Potentiometers

What is a Digital potentiometer?
Digital Potentiometers are a three terminal device, two fixed end terminals and one wiper terminal which is used to vary the resistance.
A Digital potentiometer also known as digipot, is similar to a standard analogue potentiometer, which is a variable resistor except the digital potentiometer has an integrated chip (IC) that accepts a signal input rather than the physical movement of a shaft or slide for adjustment. Potentiometers physically change the resistance value whereas digital potentiometers modify the resistance value via digital inputs rather than a rotary wheel or a slider.
Where might I use one?
Digital potentiometers would be beneficial where environmental factors would impact a mechanical potentiometer in areas where there is vibration, dust, moisture or grease as digital potentiometers are encapsulated they offer better protection, they are also less vunerable to vibration Digital potentiometers are used to calibrate system tolerances or control system parameters.

What are the advantages over a mechanical potentiometer?
Digital potentiometers can be operated in a closed control loop and don’t need physical access to be adjusted. . They offer better stability and reliability and as digital will offer additional functionality, some even have on - chip memory
Applications
• System calibration
• Process control
• Sensor calibration
• Smart actuator
• Voltage margining
• Programmable power supplies
• Volume control

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Description Price Control Interface Resistance Value Number of Positions Taper Type Memory Type Number of Pots per Package Mounting Type Package Type Pin Count Power Supply Type Typical Single Supply Voltage Typical Dual Supply Voltage Dimensions Height
RS Stock No. 709-5828
Mfr. Part No.AD5290YRMZ50
kr 45,96
Each
Units
Serial-3 Wire, Serial-SPI 50kΩ 256 - Volatile 1 Surface Mount MSOP 10 Dual, Single 15 V ±12 V, ±5 V, ±9 V 3 x 3 x 0.85mm 0.85mm
RS Stock No. 158-5288
Mfr. Part No.AD5290YRMZ50
kr 36,662
Each (In a Tube of 50)
Units
Serial-3 Wire, Serial-SPI 50kΩ 256 - Volatile 1 Surface Mount MSOP 10 Dual, Single 15 V ±12 V, ±5 V, ±9 V 3 x 3 x 0.85mm 0.85mm
RS Stock No. 723-9930
Mfr. Part No.MCP4151-103E/P
BrandMicrochip
kr 7,575
Each (In a Pack of 2)
Units
Serial-SPI 10kΩ 257 Linear Volatile 1 Through Hole PDIP 8 Single 1.8 to 5.5 V - 0.4 x 0.28 x 0.195in 4.95mm
RS Stock No. 159-7405
Mfr. Part No.MCP4151-103E/P
BrandMicrochip
kr 6,299
Each (In a Tube of 60)
Units
Serial-SPI 10kΩ 257 Linear Volatile 1 Through Hole PDIP 8 Single 1.8 → 5.5 V - 0.4 x 0.28 x 0.195in 4.95mm
RS Stock No. 912-7246
Mfr. Part No.AD8400ARZ1
kr 21,281
Each (In a Tube of 98)
Units
Serial-3 Wire, Serial-SPI 1kΩ 256 Linear Volatile 1 Surface Mount SOIC 8 Single 3 V, 5 V - 5 x 4 x 1.5mm 1.5mm
RS Stock No. 412-692
Mfr. Part No.AD8400ARZ1
kr 27,716
Each (In a Pack of 5)
Units
Serial-3 Wire, Serial-SPI 1kΩ 256 Linear Volatile 1 Surface Mount SOIC 8 Single 3 V, 5 V - 5 x 4 x 1.5mm 1.5mm
RS Stock No. 158-0155
Mfr. Part No.AD5252BRUZ100
kr 31,523
Each (In a Tube of 96)
Units
Serial-2 Wire, Serial-I2C 100kΩ 256 Linear Non-Volatile 2 Surface Mount TSSOP 14 Dual, Single 3 V, 5 V ±2.5V 5 x 4.4 x 1mm 1mm
RS Stock No. 403-579
Mfr. Part No.MCP42100-E/P
BrandMicrochip
kr 19,382
Each (In a Pack of 5)
Units
Serial-SPI 100kΩ 256 Linear - 2 Through Hole PDIP 14 Single 3.3 V, 5 V - 19.05 x 6.35 x 3.3mm 3.3mm
RS Stock No. 538-4757
Mfr. Part No.AD5252BRUZ100
kr 36,99
Each
Units
Serial-2 Wire, Serial-I2C 100kΩ 256 Linear Non-Volatile 2 Surface Mount TSSOP 14 Dual, Single 3 V, 5 V ±2.5V 5 x 4.4 x 1mm 1mm
RS Stock No. 165-4730
Mfr. Part No.MCP42100-E/P
BrandMicrochip
kr 16,374
Each (In a Tube of 30)
Units
Serial-SPI 100kΩ 256 Linear - 2 Through Hole PDIP 14 Single 3.3 V, 5 V - 19.05 x 6.35 x 3.3mm 3.3mm
RS Stock No. 100-0181
Mfr. Part No.X95840WV20IZ-2.7
BrandIntersil
kr 65,10
Each
Units
Serial-I2C 10kΩ 256 - Non-Volatile 3 Surface Mount TSSOP 20 Single 2.7 → 5.5 V - 6.5 x 4.4 x 0.9mm 0.9mm
RS Stock No. 170-8172
Mfr. Part No.X9C103PZ
kr 38,181
Each (In a Tube of 50)
Units
Serial-3 Wire 10kΩ 100 Linear Non-Volatile 1 Through Hole PDIP 8 Single 5 V - 9.56 x 6.35 x 3.3mm 3.3mm
RS Stock No. 146-0162
Mfr. Part No.MCP4362-503E/ST
BrandMicrochip
kr 13,213
Each (In a Tube of 96)
Units
Serial-SPI 50kΩ 257 Linear Non-Volatile 4 Surface Mount TSSOP 14 Single 1.8 → 5.5 V - 5.1 x 4.5 x 1.05mm 1.05mm
RS Stock No. 159-9317
Mfr. Part No.AD5142ABRUZ100
kr 29,985
Each (In a Tube of 96)
Units
Serial-I2C 100kΩ 256 Linear Non-Volatile 2 Surface Mount TSSOP 16 Dual, Single 2.3 → 5.5 V ±2.25 → ±2.75V 5.1 x 4.5 x 1.05mm 1.05mm
RS Stock No. 177-7139
Mfr. Part No.AD5242BRZ100
kr 23,764
Each (In a Tube of 48)
Units
Serial-2 Wire, Serial-I2C 100kΩ 256 - Volatile 2 Surface Mount SOIC 16 Dual, Single 3 V, 5 V ±2.5V 10 x 4 x 1.5mm 1.5mm
RS Stock No. 145-7793
Mfr. Part No.AD5252BRUZ50
kr 28,762
Each (In a Tube of 96)
Units
Serial-3 Wire, Serial-I2C 50kΩ 256 Linear Non-Volatile 2 Surface Mount TSSOP 14 Dual, Single 3 V, 5 V ±2.5V 5 x 4.4 x 1mm 1mm
RS Stock No. 159-6627
Mfr. Part No.MCP41050-I/SN
BrandMicrochip
kr 10,11
Each (In a Tube of 100)
Units
Serial-SPI 50kΩ 256 Linear - 1 Surface Mount SOIC 8 Single 3.3 V, 5 V - 4.9 x 3.9 x 1.25mm 1.25mm
RS Stock No. 170-8096
Mfr. Part No.X95840WV20IZ-2.7
BrandIntersil
kr 54,241
Each (In a Tube of 75)
Units
Serial-I2C 10kΩ 256 - Non-Volatile 3 Surface Mount TSSOP 20 Single 2.7 → 5.5 V - 6.5 x 4.4 x 0.9mm 0.9mm
RS Stock No. 412-703
Mfr. Part No.AD5290YRMZ10
kr 45,96
Each
Units
Serial-3 Wire, Serial-SPI 10kΩ 256 - Volatile 1 Surface Mount MSOP 10 Dual, Single 15 V ±12 V, ±5 V, ±9 V 3 x 3 x 0.85mm 0.85mm
RS Stock No. 817-3588
Mfr. Part No.MCP4561T-503E/MS
BrandMicrochip
kr 6,122
Each (On a Reel of 2500)
Units
Serial-I2C 50kΩ 257 Linear, Log Non-Volatile 1 Surface Mount MSOP 8 Single 5.5 V - 3 x 3 x 0.95mm 0.95mm
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