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
RS-stocknr. 724-0154
FabrikantnummerMCP4161-502E/SN
FabrikantMicrochip
€ 0,855
Each (In a Pack of 2)
Aantal stuks
Serial-SPI 5kΩ 257 Linear Non-Volatile 1 Surface Mount SOIC 8 Single 1.8 → 5.5 V - 4.9 x 3.9 x 1.25mm 1.25mm
RS-stocknr. 178-4878
FabrikantnummerMCP4251-104E/P
FabrikantMicrochip
€ 0,678
Each (In a Tube of 30)
Aantal stuks
Serial-SPI 100kΩ 257 Linear Volatile 2 Through Hole PDIP 14 Single 1.8 → 5.5 V - 0.4 x 0.28 x 0.195in 4.95mm
RS-stocknr. 723-9731
FabrikantnummerMCP4251-104E/P
FabrikantMicrochip
€ 0,83
Each (In a Pack of 2)
Aantal stuks
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-stocknr. 165-3385
FabrikantnummerMCP4019T-503E/LT
FabrikantMicrochip
€ 0,339
Each (On a Reel of 3000)
Aantal stuks
Serial-I2C 50kΩ 128 Linear Volatile 1 Surface Mount SC-70 5 Single 1.8 → 5.5 V - 2.25 x 1.35 x 1mm 1mm
RS-stocknr. 738-6837
FabrikantnummerMCP4019T-503E/LT
FabrikantMicrochip
€ 0,45
Each (In a Pack of 5)
Aantal stuks
Serial-I2C 50kΩ 128 Linear Volatile 1 Surface Mount SC-70 5 Single 1.8 → 5.5 V - 2.25 x 1.35 x 1mm 1mm
RS-stocknr. 159-7531
FabrikantnummerMCP4442-502E/ST
FabrikantMicrochip
€ 0,994
Each (In a Tube of 96)
Aantal stuks
Serial-I2C (2 Wire) 5kΩ 129 Linear Non-Volatile 4 Surface Mount TSSOP 14 Single 1.8 → 5.5 V - 5.1 x 4.5 x 1.05mm 1.05mm
RS-stocknr. 905-3062
FabrikantnummerMCP4442-502E/ST
FabrikantMicrochip
€ 1,198
Each (In a Pack of 5)
Aantal stuks
Serial-I2C (2 Wire) 5kΩ 129 Linear Non-Volatile 4 Surface Mount TSSOP 14 Single 1.8 → 5.5 V - 5.1 x 4.5 x 1.05mm 1.05mm
RS-stocknr. 669-6430
FabrikantnummerMCP4641-103E/ST
FabrikantMicrochip
€ 0,946
Each (In a Pack of 5)
Aantal stuks
Serial-2 Wire, Serial-I2C 10kΩ 128 - Non-Volatile 2 Surface Mount TSSOP 14 Single 2.5 V, 3.3 V, 5 V - 5 x 4.4 x 1mm 1mm
RS-stocknr. 159-6629
FabrikantnummerMCP4641-103E/ST
FabrikantMicrochip
€ 0,768
Each (In a Tube of 96)
Aantal stuks
Serial-2 Wire, Serial-I2C 10kΩ 128 - Non-Volatile 2 Surface Mount TSSOP 14 Single 2.5 V, 3.3 V, 5 V - 5 x 4.4 x 1mm 1mm
RS-stocknr. 687-8474
FabrikantnummerMCP4018T-103E/LT
FabrikantMicrochip
€ 0,45
Each
Aantal stuks
Serial-2 Wire, Serial-I2C 10kΩ 128 - Volatile 1 Surface Mount SC-70 6 Single 2.5 V, 3.3 V, 5 V - 2 x 1.25 x 0.9mm 0.9mm
RS-stocknr. 823-4273
FabrikantnummerMCP4451-103E/ST
FabrikantMicrochip
€ 1,20
Each (In a Pack of 5)
Aantal stuks
Serial-SPI 10kΩ 256 Linear - 2 Surface Mount TSSOP 20 Single 2.7 → 5.5 V - 5.1 x 4.5 x 0.95mm 0.95mm
RS-stocknr. 738-6115
FabrikantnummerMCP41010-E/SN
FabrikantMicrochip
€ 1,295
Each (In a Pack of 2)
Aantal stuks
Serial-SPI 10kΩ 256 Linear - - Surface Mount SOIC 8 Single 3.3 V, 5 V - 4.9 x 3.9 x 1.25mm 1.25mm
RS-stocknr. 403-654
FabrikantnummerMCP41100-E/P
FabrikantMicrochip
€ 1,292
Each (In a Pack of 5)
Aantal stuks
Serial-SPI 100kΩ 256 Linear - 1 Through Hole PDIP 8 Single 3.3 V, 5 V - 9.27 x 6.35 x 3.3mm 3.3mm
RS-stocknr. 723-9741
FabrikantnummerMCP4261-502E/P
FabrikantMicrochip
€ 1,075
Each (In a Pack of 2)
Aantal stuks
Serial-SPI 5kΩ 257 Linear Non-Volatile 2 Through Hole PDIP 14 Single 1.8 to 5.5 V - 0.4 x 0.28 x 0.195in 4.95mm
RS-stocknr. 144-5722
FabrikantnummerMCP41100-E/P
FabrikantMicrochip
€ 1,062
Each (In a Tube of 60)
Aantal stuks
Serial-SPI 100kΩ 256 Linear - 1 Through Hole PDIP 8 Single 3.3 V, 5 V - 9.27 x 6.35 x 3.3mm 3.3mm
RS-stocknr. 145-8986
FabrikantnummerMCP4011-502E/SN
FabrikantMicrochip
€ 0,339
Each (In a Tube of 100)
Aantal stuks
Serial-2 Wire 5kΩ 64 - Volatile - Surface Mount SOIC 8 Single 2.5 V, 3.3 V, 5 V - 4.9 x 3.9 x 1.25mm 1.25mm
RS-stocknr. 817-3588
FabrikantnummerMCP4561T-503E/MS
FabrikantMicrochip
€ 0,633
Each (On a Reel of 2500)
Aantal stuks
Serial-I2C 50kΩ 257 Linear, Log Non-Volatile 1 Surface Mount MSOP 8 Single 5.5 V - 3 x 3 x 0.95mm 0.95mm
RS-stocknr. 145-8987
FabrikantnummerMCP41010-E/SN
FabrikantMicrochip
€ 0,961
Each (In a Tube of 100)
Aantal stuks
Serial-SPI 10kΩ 256 Linear - - Surface Mount SOIC 8 Single 3.3 V, 5 V - 4.9 x 3.9 x 1.25mm 1.25mm
RS-stocknr. 911-5760
FabrikantnummerMCP4661T-103E/ML
FabrikantMicrochip
€ 0,825
Each (On a Reel of 3300)
Aantal stuks
Serial-I2C 12kΩ 256 - Non-Volatile 2 Surface Mount QFN 16 Single 2.7 → 5.5 V - 4 x 4 x 0.95mm 0.95mm
RS-stocknr. 738-6109
FabrikantnummerMCP4011-502E/SN
FabrikantMicrochip
€ 0,45
Each (In a Pack of 5)
Aantal stuks
Serial-2 Wire 5kΩ 64 - Volatile - Surface Mount SOIC 8 Single 2.5 V, 3.3 V, 5 V - 4.9 x 3.9 x 1.25mm 1.25mm