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
New
RS Stock No. 190-5266
Mfr. Part No.DS1807E+
MYR23.205
Each (In a Pack of 2)
units
- 45kΩ 65 Log - 2 Surface Mount TSSOP 14 Single 2.7 → 5.5 V - 5.1 x 4.5 x 0.95mm 0.95mm
RS Stock No. 796-8809
Mfr. Part No.AD5142ABRUZ100
MYR16.995
Each (In a Pack of 2)
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. 823-7907
Mfr. Part No.MCP4011T-202E/MC
BrandMicrochip
MYR2.048
Each (In a Pack of 20)
units
Serial-2 Wire 2.1kΩ 64 - Volatile 1 Surface Mount DFN 8 Single 1.8 → 5.5 V - 3 x 2 x 0.95mm 0.95mm
RS Stock No. 709-5667
Mfr. Part No.AD5161BRMZ100
MYR7.498
Each (In a Pack of 5)
units
Serial-2 Wire, Serial-3 Wire, Serial-I2C, Serial-SPI 100kΩ 256 - Volatile 1 Surface Mount MSOP 10 Single 3 V, 5 V - 3 x 3 x 0.85mm 0.85mm
RS Stock No. 806-5308
Mfr. Part No.AD5270BRMZ-100
MYR17.96
Each (In a Pack of 2)
units
Serial-SPI 100kΩ 1024 - Non-Volatile 1 Surface Mount MSOP 10 Dual, Single 2.7 → 5.5 V ±2.5 → ±2.75V 3.1 x 3.1 x 0.95mm 0.95mm
RS Stock No. 165-1986
Mfr. Part No.MCP4451-103E/ST
BrandMicrochip
MYR4.74
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. 732-9711
Mfr. Part No.MAX5481EUD+
MYR18.17
Each
units
Serial-SPI 10kΩ 1024 Linear Non-Volatile 1 Surface Mount TSSOP 14 Dual, Single 5.25 V ±2.5V 5.1 x 4.5 x 0.95mm 0.95mm
RS Stock No. 759-0724
Mfr. Part No.AD5292BRUZ-20
MYR26.42
Each
units
Serial-SPI 20kΩ 1024 Linear Non-Volatile - Surface Mount TSSOP 14 Dual, Single 9 → 33 V ±9 → ±16.5V 5.1 x 4.5 x 1.2mm 1.2mm
New
RS Stock No. 189-8554
Mfr. Part No.DS1804Z-010+
MYR11.338
Each (In a Pack of 5)
units
Increment/Decrement 10kΩ 100 Linear Non-Volatile 1 Surface Mount SOIC 8 Single 3 V, 5 V - 5 x 4 x 1.5mm 1.5mm
RS Stock No. 523-6816
Mfr. Part No.AD5220BNZ10
MYR16.88
Each
units
Serial-3 Wire 10kΩ 128 - Volatile 1 Through Hole PDIP 8 Single 3 V, 5 V - 9.27 x 7.24 x 3.43mm 3.43mm
RS Stock No. 709-5749
Mfr. Part No.AD5222BRZ10
MYR10.946
Each (In a Pack of 5)
units
Increment/Decrement 10kΩ 128 - Volatile 2 Surface Mount SOIC 14 Dual, Single 3 V, 5 V ±2.5V 8.75 x 4 x 1.5mm 1.5mm
RS Stock No. 159-7406
Mfr. Part No.MCP4021-103E/MS
BrandMicrochip
MYR2.57
Each (In a Tube of 100)
units
Serial-2 Wire 10kΩ 64 Linear Non-Volatile 1 Surface Mount MSOP 8 Single 1.8 → 5.5 V - 3 x 3 x 0.95mm 0.95mm
RS Stock No. 165-1909
Mfr. Part No.MCP4631T-503E/ML
BrandMicrochip
MYR3.939
Each (On a Reel of 3300)
units
Serial-I2C 50kΩ 129 - Volatile 2 Surface Mount QFN 16 Single 1.8 → 5.5 V - 4 x 4 x 0.95mm 0.95mm
RS Stock No. 697-6874
Mfr. Part No.AD5258BRMZ10
MYR6.812
Each (In a Pack of 5)
units
Serial-I2C 10kΩ 64 - Non-Volatile 1 Surface Mount MSOP 10 Single 3 V, 5 V - 3 x 3 x 0.85mm 0.85mm
RS Stock No. 823-7910
Mfr. Part No.MCP4641T-502E/ML
BrandMicrochip
MYR4.38
Each (In a Pack of 10)
units
Serial-I2C 5kΩ 129 - Non-Volatile 2 Surface Mount QFN 16 Single 2.7 → 5.5 V - 4 x 4 x 0.95mm 0.95mm
New
RS Stock No. 189-7161
Mfr. Part No.MAX5403EUB+
MYR14.426
Each (In a Tube of 50)
units
Serial-3 Wire, Serial-SPI 10kΩ 256 Linear Volatile 2 Surface Mount μMAX 10 Single 2.7 5.5 V - 3.05 x 3.05 x 0.95mm 0.95mm
RS Stock No. 158-0471
Mfr. Part No.AD5161BRMZ10
MYR6.056
Each (In a Tube of 50)
units
Serial-2 Wire, Serial-3 Wire, Serial-I2C, Serial-SPI 10kΩ 256 - Volatile 1 Surface Mount MSOP 10 Single 3 V, 5 V - 3 x 3 x 0.85mm 0.85mm
New
RS Stock No. 190-5284
Mfr. Part No.DS1809Z-010+
MYR10.93
Each (In a Pack of 5)
units
Contact/Closure 10kΩ 64 Linear Non-Volatile 1 Surface Mount SO 8 Single 4.5 → 5.5 V - 5 x 4 x 1.5mm 1.5mm
RS Stock No. 145-6430
Mfr. Part No.AD5121BCPZ10-RL7
MYR5.617
Each (On a Reel of 1500)
units
Serial-3 Wire, Serial-I2C 10kΩ 128 Linear Non-Volatile 1 Surface Mount LFCSP 16 Dual, Single 2.3 → 5.5 V ±2.25 → ±2.75V 3.1 x 3.1 x 0.75mm 0.75mm
RS Stock No. 817-3588
Mfr. Part No.MCP4561T-503E/MS
BrandMicrochip
MYR3.07
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