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 dont 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. 159-7405
Mfr. Part No.MCP4151-103E/P
BrandMicrochip
R 11.689
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. 723-9930
Mfr. Part No.MCP4151-103E/P
BrandMicrochip
R 16.96
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. 146-2404
Mfr. Part No.X9C503PZ
R 35.598
Each (In a Tube of 50)
units
Serial-3 Wire 50kΩ 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. 921-5535
Mfr. Part No.X9C503PZ
R 36.16
Each (In a Pack of 2)
units
Serial-3 Wire 50kΩ 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. 165-1986
Mfr. Part No.MCP4451-103E/ST
BrandMicrochip
R 17.625
Each (In a Tube of 74)
units
Serial-SPI 10kΩ 256 Linear - 2 Surface Mount TSSOP 20 Single 2.7 → 5.5 V - 5.1 x 4.5 x 0.95mm 0.95mm
RS stock no. 823-4273
Mfr. Part No.MCP4451-103E/ST
BrandMicrochip
R 20.162
Each (In a Pack of 5)
units
Serial-SPI 10kΩ 256 Linear - 2 Surface Mount TSSOP 20 Single 2.7 → 5.5 V - 5.1 x 4.5 x 0.95mm 0.95mm
RS stock no. 669-6430
Mfr. Part No.MCP4641-103E/ST
BrandMicrochip
R 17.356
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. 809-9780
Mfr. Part No.AD5206BN10
R 59.93
Each
units
Serial-3 Wire 10kΩ 256 Linear Non-Volatile 1 Through Hole PDIP 24 Dual, Single 2.7 → 5.5 V - 32.51 x 7.11 x 4.95mm 4.95mm
RS stock no. 159-6629
Mfr. Part No.MCP4641-103E/ST
BrandMicrochip
R 13.743
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. 738-6972
Mfr. Part No.MCP4131-503E/P
BrandMicrochip
R 12.37
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. 145-8990
Mfr. Part No.MCP4131-503E/P
BrandMicrochip
R 6.459
Each (In a Tube of 60)
units
Serial-SPI 50kΩ 129 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. 786-0792
Mfr. Part No.DS1809-010+
R 49.615
Each (In a Pack of 2)
units
Contact/Closure 10kΩ 64 Linear Non-Volatile 1 Through Hole PDIP 8 Single 4.5 → 5.5 V - 9.91 x 7.87 x 4.45mm 4.45mm
RS stock no. 165-9395
Mfr. Part No.DS1809-010+
R 42.583
Each (In a Tube of 50)
units
Contact/Closure 10kΩ 64 Linear Non-Volatile 1 Through Hole PDIP 8 Single 4.5 → 5.5 V - 9.91 x 7.87 x 4.45mm 4.45mm
RS stock no. 158-5281
Mfr. Part No.AD5206BRZ10
R 44.585
Each (In a Tube of 31)
units
Serial-3 Wire, Serial-SPI 10kΩ 256 - Volatile 6 Surface Mount SOIC W 24 Dual, Single 3 V, 5 V ±2.5V 15.6 x 7.6 x 2.35mm 2.35mm
RS stock no. 419-609
Mfr. Part No.DS3501U+
R 33.676
Each (In a Pack of 5)
units
Serial-I2C - - - - - Surface Mount μSOP 10 - - - 3.05 x 3.05 x 0.95mm 0.95mm
RS stock no. 145-7593
Mfr. Part No.AD5248BRMZ10
R 29.074
Each (In a Tube of 50)
units
Serial-3 Wire 10kΩ 256 Linear Volatile - Surface Mount MSOP 10 Single 2.7 → 5.5 V - 3.1 x 3.1 x 1.1mm 1.1mm
RS stock no. 169-8268
Mfr. Part No.DS3501U+
R 16.128
Each (In a Tube of 50)
units
Serial-I2C - - - - - Surface Mount μSOP 10 - - - 3.05 x 3.05 x 0.95mm 0.95mm
RS stock no. 738-6137
Mfr. Part No.MCP4251-103E/SL
BrandMicrochip
R 9.71
Each (In a Pack of 2)
units
Serial-SPI 10kΩ 257 Linear Volatile 2 Surface Mount SOIC 14 Single 1.8 → 5.5 V - 8.65 x 3.9 x 1.25mm 1.25mm
RS stock no. 709-5724
Mfr. Part No.AD5206BRZ10
R 46.17
Each
units
Serial-3 Wire, Serial-SPI 10kΩ 256 - Volatile 6 Surface Mount SOIC W 24 Dual, Single 3 V, 5 V ±2.5V 15.6 x 7.6 x 2.35mm 2.35mm
RS stock no. 759-0711
Mfr. Part No.AD5248BRMZ10
R 37.84
Each
units
Serial-3 Wire 10kΩ 256 Linear Volatile - Surface Mount MSOP 10 Single 2.7 → 5.5 V - 3.1 x 3.1 x 1.1mm 1.1mm