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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Filtres

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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 191-3324
Référence fabricantMAX5395LATA+T
0,658 €
Each (On a Reel of 2500)
Unité
I2C 10kΩ 256 Linear Volatile 1 Surface Mount TDFN-EP 8 Single 1.7 to 5.5 V - 2.1 x 2.1 x 0.75mm 0.75mm
N° de stock RS 191-4241
Référence fabricantDS1803E-050+
3,35 €
Each (In a Tube of 96)
Unité
Serial-2 Wire 50kΩ 256 Linear Volatile 2 Surface Mount TSSOP 14 Single 2.7 to 5.5 V - 5.1 x 4.5 x 0.95mm 0.95mm
N° de stock RS 192-1249
Référence fabricantDS1803Z-100+
3,34 €
Each (In a Tube of 50)
Unité
Serial-2 Wire 100kΩ 256 Linear Volatile 2 Surface Mount SOIC 16 Single 2.7 to 5.5 V - 10 x 4 x 1.5mm 1.5mm
N° de stock RS 192-2698
Référence fabricantMAX5478EUD+
2,818 €
Each (In a Pack of 5)
Unité
Serial-I2C 50kΩ 256 Linear Non-Volatile 1 Surface Mount TSSOP 14 Dual 2.7 to 5.25 V - 5.1 x 4.5 x 0.95mm 0.95mm
N° de stock RS 189-7156
Référence fabricantDS1804Z-050+
1,743 €
Each (In a Tube of 100)
Unité
Increment/Decrement 50kΩ 100 Linear Non-Volatile 1 Surface Mount SOIC 8 Single 3 V, 5 V - 5 x 4 x 1.5mm 1.5mm
N° de stock RS 190-5329
Référence fabricantMAX5437EUD+
6,745 €
Each (In a Pack of 2)
Unité
Microwire, QSPI, 3-Wire SPI 50kΩ 128 Linear - 1 Surface Mount TSSOP 14 Dual, Single 10 to 30 V ±5 to ±15V 5.1 x 4.5 x 0.95mm 0.95mm
N° de stock RS 189-8642
Référence fabricantMAX5494ETE+
5,86 €
Each (In a Pack of 2)
Unité
Serial-SPI 10kΩ 1024 Linear Non-Volatile 1 Surface Mount TQFN 16 Dual 2.7 to 5.25 V ±2.5V 5.1 x 5.1 x 0.75mm 0.75mm
N° de stock RS 189-7163
Référence fabricantMAX5436EUB+
4,775 €
Each (In a Tube of 50)
Unité
Serial-SPI 50kΩ 128 - - 1 Surface Mount μMAX 10 Dual, Single 10 to 30 V ±5 to ±15V 3.05 x 3.05 x 0.95mm 0.95mm
N° de stock RS 165-9567
Référence fabricantDS1845E-050+
3,73 €
Each (In a Tube of 96)
Unité
Serial-3 Wire, Serial-I2C 50kΩ 256 Linear Non-Volatile 2 Surface Mount TSSOP 14 Single 2.7 to 5.5 V - 5.1 x 4.5 x 0.95mm 0.95mm
N° de stock RS 191-6956
Référence fabricantMAX5479ETE+
2,85 €
Each (In a Pack of 5)
Unité
I2C 100kΩ 256 Linear Non-Volatile 2 Surface Mount TQFN-EP 16 Single 2.7 to 5.25 V - 3 x 3 x 0.75mm 0.75mm
N° de stock RS 191-3780
Référence fabricantDS3502U+T&R
0,838 €
Each (In a Pack of 10)
Unité
I2C 10kΩ 128 Linear Non-Volatile 1 Surface Mount μSOP 10 Single 2.5 to 5.5 V - 3.16 x 3.12 x 0.95mm 0.95mm
N° de stock RS 190-4762
Référence fabricantDS1801S+
4,253 €
Each (In a Tube of 46)
Unité
- 45kΩ 65 Log - 2 Surface Mount SOIC 16 Single 2.7 to 5.5 V - 10.5 x 7.6 x 2.35mm 2.35mm
N° de stock RS 192-1250
Référence fabricantDS1804U-010+
1,958 €
Each (In a Tube of 50)
Unité
Increment 10kΩ 100 Linear Non-Volatile 1 Surface Mount μSOP 8 Single 5 V - 3.1 x 3.1 x 0.95mm 0.95mm
N° de stock RS 786-1192
Référence fabricantMAX5478EUD+
1,885 €
Each (In a Pack of 2)
Unité
Serial-I2C 50kΩ 256 Linear Non-Volatile 1 Surface Mount TSSOP 14 Dual 2.7 to 5.25 V - 5.1 x 4.5 x 0.95mm 0.95mm
N° de stock RS 190-4770
Référence fabricantDS3904U-020+
1,087 €
Each (In a Tube of 50)
Unité
- 20kΩ 128 Linear Non-Volatile 3 Surface Mount μSOP 8 Single 2.7 to 5.5 V - 3.1 x 3.1 x 0.95mm 0.95mm
N° de stock RS 190-5291
Référence fabricantDS1267BS-010+
4,475 €
Each (In a Pack of 2)
Unité
- 10kΩ 256 Linear - 2 Surface Mount SO 16 Single 4.5 to 5.5 V - 10.5 x 7.6 x 2.35mm 2.35mm
N° de stock RS 189-7157
Référence fabricantDS1809-010+
2,11 €
Each (In a Tube of 50)
Unité
Contact/Closure 10kΩ 64 Linear Non-Volatile 1 Through Hole PDIP 8 Single 4.5 to 5.5 V - 9.91 x 7.87 x 4.45mm 4.45mm
N° de stock RS 169-8268
Référence fabricantDS3501U+
0,454 €
Each (In a Tube of 50)
Unité
Serial-I2C - - - - - Surface Mount μSOP 10 - - - 3.05 x 3.05 x 0.95mm 0.95mm
N° de stock RS 189-8263
Référence fabricantMAX5128ELA+T
1,326 €
Each (In a Pack of 5)
Unité
Serial-2 Wire 27kΩ 128 Linear Non-Volatile 1 Surface Mount μDFN 8 Single 2.7 to 5.25 V - 2.05 x 2.05 x 0.8mm 0.8mm
N° de stock RS 189-8290
Référence fabricantMAX5402EUA+
1,914 €
Each (In a Pack of 5)
Unité
Serial-SPI 10kΩ 256 Linear Volatile 1 Surface Mount μMAX 8 Single 5.5 V - 3.05 x 3.05 x 0.95mm 0.95mm