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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Description Prix 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
N° de stock RS 709-5724
Référence fabricantAD5206BRZ10
4,73 €
Each
Unité
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
N° de stock RS 523-6816
Référence fabricantAD5220BNZ10
2,87 €
Each
Unité
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
N° de stock RS 523-6838
Référence fabricantAD5220BNZ100
3,02 €
Each
Unité
Serial-3 Wire 100kΩ 128 - Volatile 1 Through Hole PDIP 8 Single 3 V, 5 V - 9.27 x 7.24 x 3.43mm 3.43mm
N° de stock RS 709-5664
Référence fabricantAD5161BRMZ50
1,572 €
Each (In a Pack of 5)
Unité
Serial-2 Wire, Serial-3 Wire, Serial-I2C, Serial-SPI 50kΩ 256 - Volatile 1 Surface Mount MSOP 10 Single 3 V, 5 V - 3 x 3 x 0.85mm 0.85mm
N° de stock RS 687-8446
Référence fabricantMCP4551-103E/MS
MarqueMicrochip
0,77 €
Each
Unité
Serial-2 Wire, Serial-I2C 10kΩ 256 - Volatile 1 Surface Mount MSOP 8 Single 2.5 V, 3.3 V, 5 V - 3 x 3 x 0.85mm 0.85mm
N° de stock RS 889-5156
Référence fabricantMCP4551-103E/MS
MarqueMicrochip
0,575 €
Each (In a Tube of 100)
Unité
Serial-2 Wire, Serial-I2C 10kΩ 256 - Volatile 1 Surface Mount MSOP 8 Single 2.5 V, 3.3 V, 5 V - 3 x 3 x 0.85mm 0.85mm
N° de stock RS 497-2662
Référence fabricantAD5241BRZ100
2,256 €
Each (In a Pack of 5)
Unité
Serial-2 Wire, Serial-I2C 100kΩ 256 - Volatile 1 Surface Mount SOIC 14 Dual, Single 3 V, 5 V ±2.5V 8.75 x 4 x 1.5mm 1.5mm
N° de stock RS 165-4163
Référence fabricantMCP45HV51-502E/ST
MarqueMicrochip
1,069 €
Each (In a Tube of 96)
Unité
Serial-I2C 5kΩ 256 Linear Volatile 1 Surface Mount TSSOP 14 Single 1.8 to 5.5 (Digital) V, 10 to 36 (Analogue) V - 5.1 x 4.5 x 1.05mm 1.05mm
N° de stock RS 669-6367
Référence fabricantMCP42010-I/P
MarqueMicrochip
1,80 €
Each (In a Pack of 2)
Unité
Serial-SPI 10kΩ 256 Linear - 2 Through Hole PDIP 14 Single 3.3 V, 5 V - 19.05 x 6.35 x 3.3mm 3.3mm
N° de stock RS 723-9930
Référence fabricantMCP4151-103E/P
MarqueMicrochip
0,76 €
Each (In a Pack of 2)
Unité
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
N° de stock RS 146-0134
Référence fabricantMCP42010-I/P
MarqueMicrochip
1,51 €
Each (In a Tube of 30)
Unité
Serial-SPI 10kΩ 256 Linear - 2 Through Hole PDIP 14 Single 3.3 V, 5 V - 19.05 x 6.35 x 3.3mm 3.3mm
N° de stock RS 829-0545
Référence fabricantMCP45HV51-502E/ST
MarqueMicrochip
1,276 €
Each (In a Pack of 5)
Unité
Serial-I2C 5kΩ 256 Linear Volatile 1 Surface Mount TSSOP 14 Single 1.8 to 5.5 (Digital) V, 10 to 36 (Analogue) V - 5.1 x 4.5 x 1.05mm 1.05mm
N° de stock RS 159-7405
Référence fabricantMCP4151-103E/P
MarqueMicrochip
0,635 €
Each (In a Tube of 60)
Unité
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
N° de stock RS 806-5317
Référence fabricantAD5272BRMZ-100
3,665 €
Each (In a Pack of 2)
Unité
Serial-3 Wire, Serial-I2C 100kΩ 1024 - Non-Volatile 1 Surface Mount MSOP 10 Dual, Single 2.7 to 5.5 V ±2.5 → ±2.75V 3.1 x 3.1 x 0.95mm 0.95mm
N° de stock RS 538-7144
Référence fabricantAD5262BRUZ200
4,36 €
Each
Unité
Serial-2 Wire, Serial-I2C 200kΩ 256 Linear Volatile 2 Surface Mount TSSOP 16 Dual, Single 15 V ±5V 5 x 4.4 x 1.05mm 1.05mm
N° de stock RS 829-0541
Référence fabricantMCP45HV51-104E/ST
MarqueMicrochip
1,276 €
Each (In a Pack of 5)
Unité
Serial-I2C 100kΩ 256 Linear Volatile 1 Surface Mount TSSOP 14 Single 1.8 to 5.5 (Digital) V, 10 to 36 (Analogue) V - 5.1 x 4.5 x 1.05mm 1.05mm
N° de stock RS 144-9093
Référence fabricantMCP41010-E/P
MarqueMicrochip
1,099 €
Each (In a Tube of 60)
Unité
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
N° de stock RS 921-5848
Référence fabricantX9C102PZ
5,65 €
Each (In a Pack of 2)
Unité
Serial-3 Wire 1kΩ 100 Linear Non-Volatile 1 Through Hole PDIP 8 Single 5 V - 9.56 x 6.35 x 3.3mm 3.3mm
N° de stock RS 709-7121
Référence fabricantAD8402ARZ1
3,98 €
Each
Unité
Serial-3 Wire, Serial-SPI 1kΩ 256 Linear Volatile 2 Surface Mount SOIC 14 Single 3 V, 5 V - 8.75 x 4 x 1.5mm 1.5mm
N° de stock RS 809-9301
Référence fabricantAD5171BRJZ10-R2
2,882 €
Each (On a Tape of 5)
Unité
Serial-2 Wire 10kΩ 64 Linear Non-Volatile 1 Surface Mount SOT-23 8 Single 2.7 to 5.5 V - 2.9 x 1.6 x 1.3mm 1.3mm