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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Beskrivning Pris 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-artikelnummer 806-5294
Tillv. art.nrAD5110BCPZ10-500R7
VarumärkeAnalog Devices
19,294 kr
Each (In a Pack of 5)
Enheter
Serial-3 Wire, Serial-I2C 80kΩ 128 - Non-Volatile 1 Surface Mount LFCSP UD 8 Single 2.3 → 5.5 V - 2 x 2 x 0.6mm 0.6mm
RS-artikelnummer 160-1638
Tillv. art.nrAD5110BCPZ10-500R7
VarumärkeAnalog Devices
11,035 kr
Each (On a Reel of 500)
Enheter
Serial-3 Wire, Serial-I2C 80kΩ 128 - Non-Volatile 1 Surface Mount LFCSP UD 8 Single 2.3 → 5.5 V - 2 x 2 x 0.6mm 0.6mm
RS-artikelnummer 819-5620
Tillv. art.nrMCP42010-I/ST
VarumärkeMicrochip
16,553 kr
Each (In a Tube of 96)
Enheter
SPI 12kΩ 256 Linear Volatile 2 Surface Mount TSSOP 14 Single 2.7 → 5.5 V - 5.1 x 4.5 x 0.95mm 0.95mm
RS-artikelnummer 497-2690
Tillv. art.nrAD5242BRUZ10
VarumärkeAnalog Devices
30,30 kr
Each
Enheter
Serial-2 Wire, Serial-I2C 10kΩ 256 - Volatile 2 Surface Mount TSSOP 16 Dual, Single 3 V, 5 V ±2.5V 5 x 4.4 x 1.05mm 1.05mm
RS-artikelnummer 427-064
Tillv. art.nrAD5242BRZ10
VarumärkeAnalog Devices
30,566 kr
Each (In a Pack of 5)
Enheter
Serial-2 Wire, Serial-I2C 10kΩ 256 - Volatile 2 Surface Mount SOIC 16 Dual, Single 3 V, 5 V ±2.5V 10 x 4 x 1.5mm 1.5mm
RS-artikelnummer 161-0610
Tillv. art.nrAD5242BRUZ10
VarumärkeAnalog Devices
23,074 kr
Each (In a Tube of 96)
Enheter
Serial-2 Wire, Serial-I2C 10kΩ 256 - Volatile 2 Surface Mount TSSOP 16 Dual, Single 3 V, 5 V ±2.5V 5 x 4.4 x 1.05mm 1.05mm
RS-artikelnummer 111-2252
Tillv. art.nrAD5160BRJZ100-R2
VarumärkeAnalog Devices
16,163 kr
Each (On a Reel of 250)
Enheter
Serial-3 Wire, Serial-SPI 100kΩ 256 Linear Volatile 1 Surface Mount SOT-23 8 Single 3 V, 5 V - 2.9 x 1.6 x 1.15mm 1.15mm
RS-artikelnummer 497-0745
Tillv. art.nrAD5235BRUZ25
VarumärkeAnalog Devices
90,89 kr
Each
Enheter
Serial-2 Wire, Serial-I2C 25kΩ 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-artikelnummer 106-7041
Tillv. art.nrAD5235BRUZ25
VarumärkeAnalog Devices
72,341 kr
Each (In a Tube of 96)
Enheter
Serial-2 Wire, Serial-I2C 25kΩ 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-artikelnummer 697-6843
Tillv. art.nrAD5160BRJZ100-R2
VarumärkeAnalog Devices
24,30 kr
Each (In a Pack of 5)
Enheter
Serial-3 Wire, Serial-SPI 100kΩ 256 Linear Volatile 1 Surface Mount SOT-23 8 Single 3 V, 5 V - 2.9 x 1.6 x 1.15mm 1.15mm
RS-artikelnummer 161-0163
Tillv. art.nrAD5242BRZ10
VarumärkeAnalog Devices
24,189 kr
Each (In a Tube of 48)
Enheter
Serial-2 Wire, Serial-I2C 10kΩ 256 - Volatile 2 Surface Mount SOIC 16 Dual, Single 3 V, 5 V ±2.5V 10 x 4 x 1.5mm 1.5mm
RS-artikelnummer 819-5765
Tillv. art.nrMCP4351T-502E/ML
VarumärkeMicrochip
9,464 kr
Each (On a Reel of 3300)
Enheter
SPI 6kΩ 257 Linear Volatile 4 Surface Mount QFN 20 Single 1.8 → 5.5 V - 4 x 4 x 0.95mm 0.95mm
RS-artikelnummer 819-5768
Tillv. art.nrMCP4351T-104E/ML
VarumärkeMicrochip
9,464 kr
Each (On a Reel of 3300)
Enheter
SPI 120kΩ 257 Linear Volatile 4 Surface Mount QFN 20 Single 1.8 → 5.5 V - 4 x 4 x 0.95mm 0.95mm
RS-artikelnummer 709-7121
Tillv. art.nrAD8402ARZ1
VarumärkeAnalog Devices
43,43 kr
Each
Enheter
Serial-3 Wire, Serial-SPI 1kΩ 256 Linear Volatile 2 Surface Mount SOIC 14 Single 3 V, 5 V - 8.75 x 4 x 1.5mm 1.5mm
RS-artikelnummer 738-6768
Tillv. art.nrMCP4014T-103E/OT
VarumärkeMicrochip
2,816 kr
Each (On a Tape of 5)
Enheter
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
RS-artikelnummer 823-7907
Tillv. art.nrMCP4011T-202E/MC
VarumärkeMicrochip
2,827 kr
Each (In a Pack of 20)
Enheter
Serial-2 Wire 2.1kΩ 64 - Volatile 1 Surface Mount DFN 8 Single 1.8 → 5.5 V - 3 x 2 x 0.95mm 0.95mm
RS-artikelnummer 497-1489
Tillv. art.nrAD5231BRUZ100
VarumärkeAnalog Devices
47,46 kr
Each
Enheter
Serial-2 Wire, Serial-I2C 100kΩ 1024 Linear, Log Non-Volatile 1 Surface Mount TSSOP 16 Dual, Single 3 V, 5 V ±2.5V 5 x 4.4 x 1.05mm 1.05mm
RS-artikelnummer 165-9599
Tillv. art.nrMAX5495ETE+
VarumärkeMaxim Integrated
51,602 kr
Each (In a Tube of 60)
Enheter
Serial-3 Wire, Serial-SPI 50kΩ 1024 Linear Non-Volatile 2 Surface Mount TQFN 16 Dual, Single 2.7 → 5.25 V ±2.5V 3.1 x 3.1 x 0.75mm 0.75mm
RS-artikelnummer 819-5771
Tillv. art.nrMCP4351T-503E/ST
VarumärkeMicrochip
9,464 kr
Each (On a Reel of 2500)
Enheter
SPI 60kΩ 257 Linear Volatile 4 Surface Mount TSSOP 20 Single 1.8 → 5.5 V - 6.6 x 4.5 x 1.05mm 1.05mm
RS-artikelnummer 160-9912
Tillv. art.nrAD5160BRJZ50-RL7
VarumärkeAnalog Devices
9,291 kr
Each (On a Reel of 3000)
Enheter
Serial-SPI 50kΩ 256 Linear Volatile 1 Surface Mount SOT-23 8 Single 2.7 → 5.5 V - 3 x 1.7 x 1.3mm 1.3mm
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