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 709-5783
Tillv. art.nrAD5254BRUZ1
VarumärkeAnalog Devices
54,70 kr
Each
Enheter
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-artikelnummer 806-5298
Tillv. art.nrAD5175BRMZ-10
VarumärkeAnalog Devices
35,985 kr
Each (In a Pack of 2)
Enheter
Serial-3 Wire, Serial-I2C 10kΩ 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-artikelnummer 817-3566
Tillv. art.nrMCP4361T-502E/ML
VarumärkeMicrochip
12,784 kr
Each (On a Reel of 3300)
Enheter
Serial-SPI 5kΩ 257 - Non-Volatile 4 Surface Mount QFN 20 Single 5.5 V - 4 x 4 x 1mm 1mm
RS-artikelnummer 709-5737
Tillv. art.nrAD5220BRZ50
VarumärkeAnalog Devices
28,00 kr
Each (In a Pack of 5)
Enheter
Serial-3 Wire 50kΩ 128 - Volatile 1 Surface Mount SOIC 8 Single 3 V, 5 V - 5 x 4 x 1.5mm 1.5mm
RS-artikelnummer 168-4154
Tillv. art.nrAD5220BRMZ100
VarumärkeAnalog Devices
23,176 kr
Each (In a Tube of 50)
Enheter
Serial-3 Wire 100kΩ 128 Linear Volatile - Surface Mount MSOP 8 Single 2.7 → 5.5 V - 3.2 x 3.2 x 1.1mm 1.1mm
RS-artikelnummer 190-4771
Tillv. art.nrDS3930E+
VarumärkeMaxim Integrated
31,901 kr
Each (In a Tube of 74)
Enheter
- 19.8kΩ 256 Linear Non-Volatile 6 Surface Mount TSSOP 20 Single 2.7 → 5.5 V - 6.6 x 4.5 x 0.95mm 0.95mm
RS-artikelnummer 723-9731
Tillv. art.nrMCP4251-104E/P
VarumärkeMicrochip
8,425 kr
Each (In a Pack of 2)
Enheter
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-artikelnummer 190-4779
Tillv. art.nrMAX5477EUD+
VarumärkeMaxim Integrated
21,228 kr
Each (In a Tube of 96)
Enheter
I2C 10kΩ 256 Linear Non-Volatile 2 Surface Mount TSSOP 14 Single 2.7 → 5.25 V - 5.1 x 4.5 x 0.95mm 0.95mm
RS-artikelnummer 191-3540
Tillv. art.nrMAX5395LATA+T
VarumärkeMaxim Integrated
9,992 kr
Each (In a Pack of 10)
Enheter
I2C 10kΩ 256 Linear Volatile 1 Surface Mount TDFN-EP 8 Single 1.7 → 5.5 V - 2.1 x 2.1 x 0.75mm 0.75mm
RS-artikelnummer 165-3376
Tillv. art.nrMCP4013T-103E/CH
VarumärkeMicrochip
3,516 kr
Each (On a Reel of 3000)
Enheter
Serial-2 Wire 10kΩ 64 Linear Volatile 1 Surface Mount SOT-23 6 Single 1.8 → 5.5 V - 3.1 x 1.75 x 1.3mm 1.3mm
RS-artikelnummer 178-4935
Tillv. art.nrMCP42100-I/SL
VarumärkeMicrochip
16,099 kr
Each (In a Tube of 57)
Enheter
Serial-SPI 100kΩ 256 Linear - 2 Surface Mount SOIC 14 Single 3.3 V, 5 V - 8.65 x 3.9 x 1.25mm 1.25mm
RS-artikelnummer 697-8031
Tillv. art.nrAD5248BRMZ50
VarumärkeAnalog Devices
24,112 kr
Each (In a Pack of 5)
Enheter
Serial-3 Wire, Serial-I2C 50kΩ 256 - Volatile 2 Surface Mount MSOP 10 Single 3 V, 5 V - 3 x 3 x 0.85mm 0.85mm
RS-artikelnummer 158-0524
Tillv. art.nrAD8400ARZ100
VarumärkeAnalog Devices
22,071 kr
Each (In a Tube of 98)
Enheter
Serial-3 Wire, Serial-SPI 100kΩ 256 Linear Volatile 1 Surface Mount SOIC 8 Single 3 V, 5 V - 5 x 4 x 1.5mm 1.5mm
RS-artikelnummer 820-9340
Tillv. art.nrAD5246BKSZ10-RL7
VarumärkeAnalog Devices
13,194 kr
Each (In a Pack of 5)
Enheter
Serial-3 Wire, Serial-I2C 10kΩ 128 - Non-Volatile 1 Surface Mount SC-70 6 Single 2.7 → 5.5 V - 2.2 x 1.35 x 1mm 1mm
RS-artikelnummer 911-5760
Tillv. art.nrMCP4661T-103E/ML
VarumärkeMicrochip
6,658 kr
Each (On a Reel of 3300)
Enheter
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-artikelnummer 709-5718
Tillv. art.nrAD5206BRUZ10
VarumärkeAnalog Devices
49,32 kr
Each
Enheter
Serial-3 Wire, Serial-SPI 10kΩ 256 - Volatile 6 Surface Mount TSSOP 24 Dual, Single 3 V, 5 V ±2.5V 7.8 x 4.4 x 1.05mm 1.05mm
RS-artikelnummer 191-3917
Tillv. art.nrDS18030-100+
VarumärkeMaxim Integrated
35,614 kr
Each (In a Tube of 25)
Enheter
- 10kΩ 256 Linear Volatile 2 Through Hole DIP 16 Single 5.5 (Max.) V - 19.43 x 7.87 x 4.45mm 4.45mm
RS-artikelnummer 158-5277
Tillv. art.nrAD5161BRMZ5
VarumärkeAnalog Devices
14,112 kr
Each (In a Tube of 50)
Enheter
Serial-2 Wire, Serial-3 Wire, Serial-I2C, Serial-SPI 5kΩ 256 - Volatile 1 Surface Mount MSOP 10 Single 3 V, 5 V - 3 x 3 x 0.85mm 0.85mm
RS-artikelnummer 183-1692
Tillv. art.nrAD5260BRUZ200
VarumärkeAnalog Devices
33,328 kr
Each (In a Tube of 96)
Enheter
Serial-3 Wire 200kΩ 256 Linear - 1 Surface Mount TSSOP 14 Dual, Single 5 → 15 V ±5.5V 5.1 x 4.5 x 1.05mm 1.05mm
RS-artikelnummer 190-4763
Tillv. art.nrDS18030-050+
VarumärkeMaxim Integrated
36,424 kr
Each (In a Tube of 25)
Enheter
Serial-2 Wire 50kΩ 256 Linear Volatile 2 Through Hole DIP 16 Single 2.7 → 5.5 V - 19.43 x 7.87 x 4.45mm 4.45mm
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