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. 796-8880
FabrikantnummerAD5111BCPZ10-500R7
FabrikantAnalog Devices
€ 1,858
Each (In a Pack of 5)
Aantal stuks
Up/Down 10kΩ 128 Linear Non-Volatile 1 Surface Mount LFCSP 8 Single 2.3 → 5.5 V - 2 x 2 x 0.55mm 0.55mm
RS-stocknr. 796-8827
FabrikantnummerAD5144BRUZ10
FabrikantAnalog Devices
€ 3,54
Each
Aantal stuks
Serial-SPI 10kΩ 256 Linear Non-Volatile 4 Surface Mount TSSOP 20 Dual, Single 2.3 → 5.5 V ±2.25 → ±2.75V 6.6 x 4.5 x 1.05mm 1.05mm
RS-stocknr. 913-0784
FabrikantnummerAD5254BRUZ1
FabrikantAnalog Devices
€ 4,54
Each (In a Tube of 75)
Aantal stuks
Serial-3 Wire, Serial-I2C 1kΩ 256 Linear Non-Volatile 4 Surface Mount TSSOP 20 Dual, Single 3 V, 5 V ±2.5V 6.5 x 4.4 x 1.05mm 1.05mm
RS-stocknr. 158-5288
FabrikantnummerAD5290YRMZ50
FabrikantAnalog Devices
€ 3,895
Each (In a Tube of 50)
Aantal stuks
Serial-3 Wire, Serial-SPI 50kΩ 256 - Volatile 1 Surface Mount MSOP 10 Dual, Single 15 V ±12 V, ±5 V, ±9 V 3 x 3 x 0.85mm 0.85mm
RS-stocknr. 709-5828
FabrikantnummerAD5290YRMZ50
FabrikantAnalog Devices
€ 4,73
Each
Aantal stuks
Serial-3 Wire, Serial-SPI 50kΩ 256 - Volatile 1 Surface Mount MSOP 10 Dual, Single 15 V ±12 V, ±5 V, ±9 V 3 x 3 x 0.85mm 0.85mm
RS-stocknr. 709-5783
FabrikantnummerAD5254BRUZ1
FabrikantAnalog Devices
€ 5,46
Each
Aantal stuks
Serial-3 Wire, Serial-I2C 1kΩ 256 Linear Non-Volatile 4 Surface Mount TSSOP 20 Dual, Single 3 V, 5 V ±2.5V 6.5 x 4.4 x 1.05mm 1.05mm
RS-stocknr. 159-9323
FabrikantnummerAD5144BRUZ10
FabrikantAnalog Devices
€ 3,486
Each (In a Tube of 75)
Aantal stuks
Serial-SPI 10kΩ 256 Linear Non-Volatile 4 Surface Mount TSSOP 20 Dual, Single 2.3 → 5.5 V ±2.25 → ±2.75V 6.6 x 4.5 x 1.05mm 1.05mm
RS-stocknr. 921-5680
FabrikantnummerX9C102SZ
€ 6,195
Each (In a Pack of 2)
Aantal stuks
Serial-3 Wire 1kΩ 100 Linear Non-Volatile 1 Surface Mount SOIC 8 Single 5 V - 5 x 4 x 1.5mm 1.5mm
RS-stocknr. 923-1474
FabrikantnummerX9C102SZ
€ 3,918
Each (In a Tube of 100)
Aantal stuks
Serial-3 Wire 1kΩ 100 Linear Non-Volatile 1 Surface Mount SOIC 8 Single 5 V - 5 x 4 x 1.5mm 1.5mm
RS-stocknr. 170-8172
FabrikantnummerX9C103PZ
€ 3,83
Each (In a Tube of 50)
Aantal stuks
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-stocknr. 497-0751
FabrikantnummerAD5235BRUZ250
FabrikantAnalog Devices
€ 9,57
Each
Aantal stuks
Serial-2 Wire, Serial-I2C 250kΩ 1024 Linear, Log Non-Volatile 2 Surface Mount TSSOP 16 Dual, Single 3.3 V, 5 V ±2.5V 5 x 4.4 x 1.05mm 1.05mm
RS-stocknr. 905-3062
FabrikantnummerMCP4442-502E/ST
FabrikantMicrochip
€ 0,704
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. 230-703
FabrikantnummerAD8400ARZ10
FabrikantAnalog Devices
€ 2,74
Each (In a Pack of 5)
Aantal stuks
Serial-3 Wire, Serial-SPI 10kΩ 256 Linear Volatile 1 Surface Mount SOIC 8 Single 3 V, 5 V - 5 x 4 x 1.5mm 1.5mm
RS-stocknr. 159-6629
FabrikantnummerMCP4641-103E/ST
FabrikantMicrochip
€ 0,745
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. 106-7042
FabrikantnummerAD5235BRUZ250
FabrikantAnalog Devices
€ 6,996
Each (In a Tube of 96)
Aantal stuks
Serial-2 Wire, Serial-I2C 250kΩ 1024 Linear, Log Non-Volatile 2 Surface Mount TSSOP 16 Dual, Single 3.3 V, 5 V ±2.5V 5 x 4.4 x 1.05mm 1.05mm
RS-stocknr. 159-7531
FabrikantnummerMCP4442-502E/ST
FabrikantMicrochip
€ 0,68
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. 669-6430
FabrikantnummerMCP4641-103E/ST
FabrikantMicrochip
€ 0,896
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. 921-5368
FabrikantnummerX9C103PZ
€ 5,54
Each (In a Pack of 2)
Aantal stuks
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-stocknr. 160-9980
FabrikantnummerAD8400ARZ10
FabrikantAnalog Devices
€ 2,326
Each (In a Tube of 98)
Aantal stuks
Serial-3 Wire, Serial-SPI 10kΩ 256 Linear Volatile 1 Surface Mount SOIC 8 Single 3 V, 5 V - 5 x 4 x 1.5mm 1.5mm
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
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