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. 823-4273
FabrikantnummerMCP4451-103E/ST
FabrikantMicrochip
€ 1,166
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. 158-2562
FabrikantnummerAD5282BRUZ200
FabrikantAnalog Devices
€ 3,939
Each (In a Tube of 96)
Aantal stuks
Serial-3 Wire, Serial-I2C 200kΩ 256 - Volatile 2 Surface Mount TSSOP 16 Dual, Single 15 V ±5V 5 x 4.4 x 1.05mm 1.05mm
RS-stocknr. 820-9343
FabrikantnummerAD5246BKSZ50-RL7
FabrikantAnalog Devices
€ 1,282
Each (In a Pack of 5)
Aantal stuks
Serial-3 Wire, Serial-I2C 50kΩ 128 - Non-Volatile 1 Surface Mount SC-70 6 Single 2.7 → 5.5 V - 2.2 x 1.35 x 1mm 1mm
RS-stocknr. 824-6431
FabrikantnummerMCP4661T-103E/ML
FabrikantMicrochip
€ 0,649
Each (In a Pack of 10)
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. 403-654
FabrikantnummerMCP41100-E/P
FabrikantMicrochip
€ 1,31
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. 687-8474
FabrikantnummerMCP4018T-103E/LT
FabrikantMicrochip
€ 0,43
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. 178-4879
FabrikantnummerMCP4261-502E/P
FabrikantMicrochip
€ 0,855
Each (In a Tube of 30)
Aantal stuks
Serial-SPI 5kΩ 257 Linear Non-Volatile 2 Through Hole PDIP 8 Single 1.8 → 5.5 V - 0.4 x 0.28 x 0.195in 4.95mm
RS-stocknr. 709-4756
FabrikantnummerAD5282BRUZ200
FabrikantAnalog Devices
€ 4,64
Each
Aantal stuks
Serial-3 Wire, Serial-I2C 200kΩ 256 - Volatile 2 Surface Mount TSSOP 16 Dual, Single 15 V ±5V 5 x 4.4 x 1.05mm 1.05mm
RS-stocknr. 921-5548
FabrikantnummerX9C103SIZ
€ 5,83
Each (In a Pack of 2)
Aantal stuks
Serial-3 Wire 10kΩ 100 Linear Non-Volatile 1 Surface Mount SOIC 8 Single 5 V - 5 x 4 x 1.5mm 1.5mm
RS-stocknr. 738-6109
FabrikantnummerMCP4011-502E/SN
FabrikantMicrochip
€ 0,432
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
RS-stocknr. 170-8191
FabrikantnummerX9C103SIZ
FabrikantIntersil
€ 4,201
Each (In a Tube of 100)
Aantal stuks
Serial-3 Wire 10kΩ 100 Linear Non-Volatile 1 Surface Mount SOIC 8 Single 5 V - 5 x 4 x 1.5mm 1.5mm
RS-stocknr. 145-8987
FabrikantnummerMCP41010-E/SN
FabrikantMicrochip
€ 1,083
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. 159-7603
FabrikantnummerAD5165BUJZ100-R7
FabrikantAnalog Devices
€ 1,673
Each (On a Reel of 3000)
Aantal stuks
Serial-3 Wire 100kΩ 256 Linear Volatile - Surface Mount SOT-23 8 Single 2.7 → 5.5 V - 2.9 x 1.6 x 0.9mm 0.9mm
RS-stocknr. 165-4162
FabrikantnummerMCP45HV51-104E/ST
FabrikantMicrochip
€ 1,069
Each (In a Tube of 96)
Aantal stuks
Serial-I2C 100kΩ 256 Linear Volatile 1 Surface Mount TSSOP 14 Single 1.8 → 5.5 (Digital) V, 10 → 36 (Analogue) V - 5.1 x 4.5 x 1.05mm 1.05mm
RS-stocknr. 165-4163
FabrikantnummerMCP45HV51-502E/ST
FabrikantMicrochip
€ 1,069
Each (In a Tube of 96)
Aantal stuks
Serial-I2C 5kΩ 256 Linear Volatile 1 Surface Mount TSSOP 14 Single 1.8 → 5.5 (Digital) V, 10 → 36 (Analogue) V - 5.1 x 4.5 x 1.05mm 1.05mm
RS-stocknr. 190-5375
FabrikantnummerMAX5482EUD+
FabrikantMaxim Integrated
€ 3,21
Each (In a Pack of 5)
Aantal stuks
- 50kΩ 1024 Linear Non-Volatile 1 Surface Mount TSSOP 14 Dual, Single 2.7 → 5.25 V -2.5 → -0.2V 5.1 x 4.5 x 0.95mm 0.95mm
RS-stocknr. 183-1684
FabrikantnummerAD5160BRJZ100-RL7
FabrikantAnalog Devices
€ 1,512
Each (On a Reel of 3000)
Aantal stuks
SPI 100kΩ 256 Linear - 1 Surface Mount SOT-23 8 Single 2.7 → 5.5 V - 3 x 1.7 x 1.3mm 1.3mm
RS-stocknr. 738-6916
FabrikantnummerMCP4023T-503E/CH
FabrikantMicrochip
€ 0,396
Each (In a Pack of 5)
Aantal stuks
Serial-2 Wire 50kΩ 64 Linear Non-Volatile 1 Surface Mount SOT-23 6 Single 1.8 → 5.5 V - 3.1 x 1.75 x 1.3mm 1.3mm
RS-stocknr. 146-0162
FabrikantnummerMCP4362-503E/ST
FabrikantMicrochip
€ 1,045
Each (In a Tube of 96)
Aantal stuks
Serial-SPI 50kΩ 257 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. 165-4164
FabrikantnummerMCP45HV51-103E/ST
FabrikantMicrochip
€ 1,069
Each (In a Tube of 96)
Aantal stuks
Serial-I2C 10kΩ 256 Linear Volatile 1 Surface Mount TSSOP 14 Single 1.8 → 5.5 (Digital) V, 10 → 36 (Analogue) V - 5.1 x 4.5 x 1.05mm 1.05mm
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