Digital Potentiometers

Digital Potentiometers are three-terminal devices, two fixed end terminals and one wiper terminal which are used to vary resistance.

What is a Digital potentiometer?

A digital potentiometer also known as a digipot, is similar to a standard analogue potentiometer, which is a variable type resistor except the digital potentiometer has an IC (integrated circuit) that can take a signal input rather. 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 vulnerable 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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Viewing 1 - 20 of 166 products
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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. 723-9930
Mfr. Part No.MCP4151-103E/P
BrandMicrochip
R 22.585
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
R 12.748
Each (In a Tube of 60)
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. 823-4273
Mfr. Part No.MCP4451-103E/ST
BrandMicrochip
R 22.684
Each (In a Pack of 5)
units
Serial-SPI 10kΩ 256 Linear - 2 Surface Mount TSSOP 20 Single 2.7 to 5.5 V - 5.1 x 4.5 x 0.95mm 0.95mm
RS stock no. 165-1986
Mfr. Part No.MCP4451-103E/ST
BrandMicrochip
R 19.007
Each (In a Tube of 74)
units
Serial-SPI 10kΩ 256 Linear - 2 Surface Mount TSSOP 20 Single 2.7 to 5.5 V - 5.1 x 4.5 x 0.95mm 0.95mm
RS stock no. 145-8990
Mfr. Part No.MCP4131-503E/P
BrandMicrochip
R 9.361
Each (In a Tube of 60)
units
Serial-SPI 50kΩ 129 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. 159-6629
Mfr. Part No.MCP4641-103E/ST
BrandMicrochip
R 14.607
Each (In a Tube of 96)
units
Serial-2 Wire, Serial-I2C 10kΩ 128 - Non-Volatile 2 Surface Mount TSSOP 14 Single 2.5 V, 3.3 V, 5 V - 5 x 4.4 x 1mm 1mm
RS stock no. 669-6430
Mfr. Part No.MCP4641-103E/ST
BrandMicrochip
R 17.552
Each (In a Pack of 5)
units
Serial-2 Wire, Serial-I2C 10kΩ 128 - Non-Volatile 2 Surface Mount TSSOP 14 Single 2.5 V, 3.3 V, 5 V - 5 x 4.4 x 1mm 1mm
RS stock no. 738-6972
Mfr. Part No.MCP4131-503E/P
BrandMicrochip
R 11.144
Each (In a Pack of 5)
units
Serial-SPI 50kΩ 129 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. 738-6137
Mfr. Part No.MCP4251-103E/SL
BrandMicrochip
R 15.715
Each (In a Pack of 2)
units
Serial-SPI 10kΩ 257 Linear Volatile 2 Surface Mount SOIC 14 Single 1.8 to 5.5 V - 8.65 x 3.9 x 1.25mm 1.25mm
RS stock no. 165-3376
Mfr. Part No.MCP4013T-103E/CH
BrandMicrochip
R 6.566
Each (On a Reel of 3000)
units
Serial-2 Wire 10kΩ 64 Linear Volatile 1 Surface Mount SOT-23 6 Single 1.8 to 5.5 V - 3.1 x 1.75 x 1.3mm 1.3mm
RS stock no. 144-9092
Mfr. Part No.MCP41050-E/P
BrandMicrochip
R 21.582
Each (In a Tube of 60)
units
Serial-SPI 50kΩ 256 Linear - 1 Through Hole PDIP 8 Single 3.3 V, 5 V - 9.27 x 6.35 x 3.3mm 3.3mm
RS stock no. 738-6749
Mfr. Part No.MCP4013T-103E/CH
BrandMicrochip
R 8.564
Each (In a Pack of 5)
units
Serial-2 Wire 10kΩ 64 Linear Volatile 1 Surface Mount SOT-23 6 Single 1.8 to 5.5 V - 3.1 x 1.75 x 1.3mm 1.3mm
RS stock no. 144-5722
Mfr. Part No.MCP41100-E/P
BrandMicrochip
R 21.435
Each (In a Tube of 60)
units
Serial-SPI 100kΩ 256 Linear - 1 Through Hole PDIP 8 Single 3.3 V, 5 V - 9.27 x 6.35 x 3.3mm 3.3mm
RS stock no. 144-9093
Mfr. Part No.MCP41010-E/P
BrandMicrochip
R 21.681
Each (In a Tube of 60)
units
Serial-SPI 10kΩ 256 Linear - 1 Through Hole PDIP 8 Single 3.3 V, 5 V - 9.27 x 6.35 x 3.3mm 3.3mm
RS stock no. 669-6363
Mfr. Part No.MCP41050-I/SN
BrandMicrochip
R 23.506
Each (In a Pack of 5)
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. 159-6627
Mfr. Part No.MCP41050-I/SN
BrandMicrochip
R 19.476
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. 724-0450
Mfr. Part No.MCP4021-103E/MS
BrandMicrochip
R 13.424
Each (In a Pack of 5)
units
Serial-2 Wire 10kΩ 64 Linear Non-Volatile 1 Surface Mount MSOP 8 Single 1.8 to 5.5 V - 3 x 3 x 0.95mm 0.95mm
RS stock no. 403-654
Mfr. Part No.MCP41100-E/P
BrandMicrochip
R 43.368
Each (In a Pack of 5)
units
Serial-SPI 100kΩ 256 Linear - 1 Through Hole PDIP 8 Single 3.3 V, 5 V - 9.27 x 6.35 x 3.3mm 3.3mm
RS stock no. 888-4840
Mfr. Part No.MCP4018T-103E/LT
BrandMicrochip
R 6.392
Each (On a Reel of 3000)
units
Serial-2 Wire, Serial-I2C 10kΩ 128 - Volatile 1 Surface Mount SC-70 6 Single 2.5 V, 3.3 V, 5 V - 2 x 1.25 x 0.9mm 0.9mm
RS stock no. 159-7406
Mfr. Part No.MCP4021-103E/MS
BrandMicrochip
R 10.178
Each (In a Tube of 100)
units
Serial-2 Wire 10kΩ 64 Linear Non-Volatile 1 Surface Mount MSOP 8 Single 1.8 to 5.5 V - 3 x 3 x 0.95mm 0.95mm