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 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
Nieuw
RS-stocknr. 196-9008
FabrikantnummerX9119TV14IZ-2.7
€ 11,32
Each
Aantal stuks
- - - - - - - - 14 - - - - -
RS-stocknr. 145-6071
FabrikantnummerAD5274BRMZ-100
FabrikantAnalog Devices
€ 1,779
Each (In a Tube of 50)
Aantal stuks
Serial-3 Wire, Serial-I2C 100kΩ 256 - 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-stocknr. 189-7156
FabrikantnummerDS1804Z-050+
FabrikantMaxim Integrated
€ 1,875
Each (In a Tube of 100)
Aantal stuks
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
RS-stocknr. 709-5771
FabrikantnummerAD5252BRUZ50
FabrikantAnalog Devices
€ 3,70
Each
Aantal stuks
Serial-3 Wire, Serial-I2C 50kΩ 256 Linear Non-Volatile 2 Surface Mount TSSOP 14 Dual, Single 3 V, 5 V ±2.5V 5 x 4.4 x 1mm 1mm
RS-stocknr. 823-7910
FabrikantnummerMCP4641T-502E/ML
FabrikantMicrochip
€ 0,951
Each (In a Pack of 10)
Aantal stuks
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
RS-stocknr. 518-368
FabrikantnummerX9111TV14IZ
FabrikantIntersil
€ 9,46
Each
Aantal stuks
Serial-SPI 100kΩ 1024 Linear Non-Volatile 1 Surface Mount TSSOP 14 Single 5 V - 5.05 x 4.5 x 1.05mm 1.05mm
RS-stocknr. 165-3467
FabrikantnummerMCP4161-103E/P
FabrikantMicrochip
€ 0,718
Each (In a Tube of 60)
Aantal stuks
Serial-SPI 10kΩ 257 Linear Non-Volatile 1 Through Hole PDIP 8 Single 1.8 → 5.5 V - 0.4 x 0.28 x 0.195in 4.95mm
RS-stocknr. 912-7836
FabrikantnummerAD7376ARUZ10
FabrikantAnalog Devices
€ 6,155
Each (In a Tube of 96)
Aantal stuks
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-stocknr. 160-1641
FabrikantnummerAD5270BRMZ-100
FabrikantAnalog Devices
€ 3,086
Each (In a Tube of 50)
Aantal stuks
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-stocknr. 738-6768
FabrikantnummerMCP4014T-103E/OT
FabrikantMicrochip
€ 0,264
Each (On a Tape of 5)
Aantal stuks
Serial-2 Wire 10kΩ 64 Linear Volatile 1 Surface Mount SOT-23 5 Single 1.8 → 5.5 V - 3.1 x 1.75 x 1.3mm 1.3mm
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