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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Omschrijving Prijs 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-stocknr. 821-3015
FabrikantnummerCAT5113LI-50-G
FabrikantON Semiconductor
€ 3,184
Each (In a Pack of 5)
Aantal stuks
Up/Down 50kΩ 100 Linear Non-Volatile 1 Through Hole PDIP 8 Single 2.5 to 6 V - 10.16 x 7.11 x 4.95mm 4.95mm
RS-stocknr. 821-3024
FabrikantnummerCAT5114LI-00-G
FabrikantON Semiconductor
€ 1,988
Each (In a Pack of 5)
Aantal stuks
Up/Down 100kΩ 32 Linear Non-Volatile 1 Through Hole PDIP 8 Single 2.5 to 6 V - 10.16 x 7.11 x 4.95mm 4.95mm
RS-stocknr. 821-3021
FabrikantnummerCAT5114LI-50-G
FabrikantON Semiconductor
€ 1,732
Each (In a Pack of 5)
Aantal stuks
Up/Down 50kΩ 32 Linear Non-Volatile 1 Through Hole PDIP 8 Single 2.5 to 6 V - 10.16 x 7.11 x 4.95mm 4.95mm
RS-stocknr. 145-3701
FabrikantnummerCAT5114LI-00-G
FabrikantON Semiconductor
€ 1,845
Each (In a Tube of 50)
Aantal stuks
Up/Down 100kΩ 32 Linear Non-Volatile 1 Through Hole PDIP 8 Single 2.5 to 6 V - 10.16 x 7.11 x 4.95mm 4.95mm
RS-stocknr. 145-3237
FabrikantnummerCAT5113LI-50-G
FabrikantON Semiconductor
€ 1,252
Each (In a Tube of 50)
Aantal stuks
Up/Down 50kΩ 100 Linear Non-Volatile 1 Through Hole PDIP 8 Single 2.5 to 6 V - 10.16 x 7.11 x 4.95mm 4.95mm
RS-stocknr. 163-0431
FabrikantnummerCAT5114LI-50-G
FabrikantON Semiconductor
€ 1,845
Each (In a Tube of 50)
Aantal stuks
Up/Down 50kΩ 32 Linear Non-Volatile 1 Through Hole PDIP 8 Single 2.5 to 6 V - 10.16 x 7.11 x 4.95mm 4.95mm