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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Beskrivning Pris 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-artikelnummer 158-0473
Tillv. art.nrAD5245BRJZ5-R2
VarumärkeAnalog Devices
14,25 kr
Each (On a Reel of 250)
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Serial-3 Wire, Serial-I2C 5kΩ 256 - Volatile 1 Surface Mount SOT-23 8 Single 3 V, 5 V - 2.9 x 1.6 x 1.15mm 1.15mm
RS-artikelnummer 190-4770
Tillv. art.nrDS3904U-020+
VarumärkeMaxim Integrated
12,667 kr
Each (In a Tube of 50)
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- 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
RS-artikelnummer 709-5727
Tillv. art.nrAD5206BRZ100
VarumärkeAnalog Devices
47,77 kr
Each
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Serial-3 Wire, Serial-SPI 100kΩ 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-artikelnummer 139-284
Tillv. art.nrDS18030-010+
VarumärkeMaxim Integrated
42,44 kr
Each
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Serial-2 Wire 10kΩ 256 Linear Volatile 2 Through Hole PDIP 16 Single 3 V, 5 V - 19.43 x 7.87 x 4.45mm 4.45mm
RS-artikelnummer 796-8815
Tillv. art.nrAD5144ABRUZ10
VarumärkeAnalog Devices
58,55 kr
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Serial-I2C 10kΩ 256 Linear Non-Volatile 4 Surface Mount TSSOP 20 Dual, Single 2.3 to 5.5 V ±2.25 → ±2.75V 6.6 x 4.5 x 1.05mm 1.05mm
RS-artikelnummer 538-7762
Tillv. art.nrAD5242BRZ1M
VarumärkeAnalog Devices
29,43 kr
Each
Enheter
Serial-2 Wire, Serial-I2C 1000kΩ 256 - Volatile 2 Surface Mount SOIC 16 Dual, Single 3 V, 5 V ±2.5V 10 x 4 x 1.5mm 1.5mm
RS-artikelnummer 191-3214
Tillv. art.nrMAX5455EUD+
VarumärkeMaxim Integrated
27,935 kr
Each (In a Tube of 96)
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Up/Down 100kΩ 256 Linear - 2 Surface Mount TSSOP 14 Single 2.7 to 5.5 V - 5.1 x 4.5 x 0.95mm 0.95mm
RS-artikelnummer 191-6956
Tillv. art.nrMAX5479ETE+
VarumärkeMaxim Integrated
35,81 kr
Each (In a Pack of 5)
Enheter
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
RS-artikelnummer 497-1489
Tillv. art.nrAD5231BRUZ100
VarumärkeAnalog Devices
45,64 kr
Each
Enheter
Serial-2 Wire, Serial-I2C 100kΩ 1024 Linear, Log Non-Volatile 1 Surface Mount TSSOP 16 Dual, Single 3 V, 5 V ±2.5V 5 x 4.4 x 1.05mm 1.05mm
RS-artikelnummer 170-8172
Tillv. art.nrX9C103PZ
46,828 kr
Each (In a Tube of 50)
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Serial-3 Wire 10kΩ 100 Linear Non-Volatile 1 Through Hole PDIP 8 Single 5 V - 9.56 x 6.35 x 3.3mm 3.3mm
RS-artikelnummer 820-9343
Tillv. art.nrAD5246BKSZ50-RL7
VarumärkeAnalog Devices
13,50 kr
Each (In a Pack of 5)
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Serial-3 Wire, Serial-I2C 50kΩ 128 - Non-Volatile 1 Surface Mount SC-70 6 Single 2.7 to 5.5 V - 2.2 x 1.35 x 1mm 1mm
RS-artikelnummer 497-2656
Tillv. art.nrAD5241BRZ10
VarumärkeAnalog Devices
24,058 kr
Each (In a Pack of 5)
Enheter
Serial-2 Wire, Serial-I2C 10kΩ 256 - Volatile 1 Surface Mount SOIC 14 Dual, Single 3 V, 5 V ±2.5V 8.75 x 4 x 1.5mm 1.5mm
RS-artikelnummer 419-609
Tillv. art.nrDS3501U+
VarumärkeMaxim Integrated
4,73 kr
Each (In a Pack of 5)
Enheter
Serial-I2C - - - - - Surface Mount μSOP 10 - - - 3.05 x 3.05 x 0.95mm 0.95mm
RS-artikelnummer 178-4878
Tillv. art.nrMCP4251-104E/P
VarumärkeMicrochip
7,042 kr
Each (In a Tube of 30)
Enheter
Serial-SPI 100kΩ 257 Linear Volatile 2 Through Hole PDIP 14 Single 1.8 to 5.5 V - 0.4 x 0.28 x 0.195in 4.95mm
RS-artikelnummer 538-8614
Tillv. art.nrAD5207BRUZ10
VarumärkeAnalog Devices
24,40 kr
Each (In a Pack of 5)
Enheter
Serial-2 Wire, Serial-I2C 10kΩ 256 Linear Volatile 2 Surface Mount TSSOP 14 Dual, Single 5 V ±2.5V 5 x 4.4 x 1mm 1mm
RS-artikelnummer 191-4776
Tillv. art.nrDS1803E-050+
VarumärkeMaxim Integrated
49,055 kr
Each (In a Pack of 2)
Enheter
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
RS-artikelnummer 709-6358
Tillv. art.nrAD7376ARUZ10
VarumärkeAnalog Devices
78,27 kr
Each
Enheter
Serial-3 Wire, Serial-SPI 10kΩ 128 - Volatile 1 Surface Mount TSSOP 14 Dual, Single 30 V ±15V 5 x 4.4 x 1mm 1mm
RS-artikelnummer 669-6373
Tillv. art.nrMCP42100-I/SL
VarumärkeMicrochip
14,15 kr
Each (In a Pack of 2)
Enheter
Serial-SPI 100kΩ 256 Linear - 2 Surface Mount SOIC 14 Single 3.3 V, 5 V - 8.65 x 3.9 x 1.25mm 1.25mm
RS-artikelnummer 669-6449
Tillv. art.nrMCP4651-103E/ST
VarumärkeMicrochip
8,808 kr
Each (In a Pack of 5)
Enheter
Serial-2 Wire, Serial-I2C 10kΩ 256 - Volatile 2 Surface Mount TSSOP 14 Single 2.5 V, 3.3 V, 5 V - 5 x 4.4 x 1mm 1mm
RS-artikelnummer 196-8999
Tillv. art.nrISL90727WIE627Z-TK
12,498 kr
Each (In a Pack of 10)
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