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 770-7761
Tillv. art.nrMCP41010-I/P
VarumärkeMicrochip
12,903 kr
Each (In a Pack of 6)
Enheter
Serial-SPI 10kΩ 256 Linear Volatile 1 Through Hole PDIP 8 Single 2.7 → 5.5 V - 9.78 x 6.6 x 3.68mm 3.68mm
RS-artikelnummer 758-9594
Tillv. art.nrAD5220BRMZ100
VarumärkeAnalog Devices
28,02 kr
Each
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 159-9323
Tillv. art.nrAD5144BRUZ10
VarumärkeAnalog Devices
36,513 kr
Each (In a Tube of 75)
Enheter
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-artikelnummer 168-4166
Tillv. art.nrAD5200BRMZ10-REEL7
VarumärkeAnalog Devices
27,284 kr
Each (On a Reel of 1000)
Enheter
Serial-3 Wire, Serial-SPI 10kΩ 256 Linear Volatile 1 Surface Mount SOIC 10 Dual, Single 2.7 → 5.5 V ±2.7V 3.15 x 3.15 x 0.97mm 0.97mm
RS-artikelnummer 921-5848
Tillv. art.nrX9C102PZ
58,42 kr
Each (In a Pack of 2)
Enheter
Serial-3 Wire 1kΩ 100 Linear Non-Volatile 1 Through Hole PDIP 8 Single 5 V - 9.56 x 6.35 x 3.3mm 3.3mm
RS-artikelnummer 697-6874
Tillv. art.nrAD5258BRMZ10
VarumärkeAnalog Devices
15,49 kr
Each (In a Pack of 5)
Enheter
Serial-I2C 10kΩ 64 - Non-Volatile 1 Surface Mount MSOP 10 Single 3 V, 5 V - 3 x 3 x 0.85mm 0.85mm
RS-artikelnummer 817-3569
Tillv. art.nrMCP4361T-502E/ST
VarumärkeMicrochip
12,784 kr
Each (On a Reel of 2500)
Enheter
Serial-SPI 5kΩ 257 - Non-Volatile 4 Surface Mount TSSOP 20 Single 5.5 V - 6.6 x 4.5 x 1.05mm 1.05mm
RS-artikelnummer 190-5279
Tillv. art.nrMAX5400EKA+T
VarumärkeMaxim Integrated
18,32 kr
Each (In a Pack of 5)
Enheter
3-Wire SPI 50kΩ 256 Linear Volatile 1 Surface Mount SOT-23 8 Single 2.7 → 5.5 V - 3 x 1.75 x 1.3mm 1.3mm
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
RS-artikelnummer 709-5759
Tillv. art.nrAD5248BRMZ100
VarumärkeAnalog Devices
23,89 kr
Each
Enheter
Serial-3 Wire, Serial-I2C 100kΩ 256 - Volatile 2 Surface Mount MSOP 10 Single 3 V, 5 V - 3 x 3 x 0.85mm 0.85mm
RS-artikelnummer 196-9005
Tillv. art.nrISL95810WIU8Z
18,087 kr
Each (In a Tube of 80)
Enheter
- - - - - - - - 8 - - - - -
RS-artikelnummer 723-9741
Tillv. art.nrMCP4261-502E/P
VarumärkeMicrochip
10,875 kr
Each (In a Pack of 2)
Enheter
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-artikelnummer 709-5825
Tillv. art.nrAD5290YRMZ100
VarumärkeAnalog Devices
47,67 kr
Each
Enheter
Serial-3 Wire, Serial-SPI 100kΩ 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-artikelnummer 669-6367
Tillv. art.nrMCP42010-I/P
VarumärkeMicrochip
19,195 kr
Each (In a Pack of 2)
Enheter
Serial-SPI 10kΩ 256 Linear - 2 Through Hole PDIP 14 Single 3.3 V, 5 V - 19.05 x 6.35 x 3.3mm 3.3mm
RS-artikelnummer 912-7836
Tillv. art.nrAD7376ARUZ10
VarumärkeAnalog Devices
67,46 kr
Each (In a Tube of 96)
Enheter
Serial-3 Wire, Serial-SPI 10kΩ 128 - Volatile 1 Surface Mount TSSOP 14 Dual, Single 30 V ±15V 5 x 4.4 x 1mm 1mm
RS-artikelnummer 821-3015
Tillv. art.nrCAT5113LI-50-G
VarumärkeON Semiconductor
31,59 kr
Each (In a Pack of 5)
Enheter
Up/Down 50kΩ 100 Linear Non-Volatile 1 Through Hole PDIP 8 Single 2.5 → 6 V - 10.16 x 7.11 x 4.95mm 4.95mm
RS-artikelnummer 723-9968
Tillv. art.nrMCP4161-103E/P
VarumärkeMicrochip
8,64 kr
Each (In a Pack of 2)
Enheter
Serial-SPI 10kΩ 257 Linear Non-Volatile 1 Through Hole PDIP 8 Single 1.8 to 5.5 V - 0.4 x 0.28 x 0.195in 4.95mm
RS-artikelnummer 160-1645
Tillv. art.nrAD5274BRMZ-20
VarumärkeAnalog Devices
19,735 kr
Each (In a Tube of 50)
Enheter
Serial-3 Wire, Serial-I2C 20kΩ 256 - 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 191-3377
Tillv. art.nrMAX5455EUD+
VarumärkeMaxim Integrated
31,074 kr
Each (In a Pack of 5)
Enheter
Up/Down 100kΩ 256 Linear - 2 Surface Mount TSSOP 14 Single 2.7 → 5.5 V - 5.1 x 4.5 x 0.95mm 0.95mm
RS-artikelnummer 190-5323
Tillv. art.nrDS1881E-050+
VarumärkeMaxim Integrated
16,583 kr
Each (In a Pack of 10)
Enheter
I2C 45kΩ 64 Log Non-Volatile 2 Surface Mount TSSOP 16 Single 2.7 → 5.5 V - 5.1 x 4.5 x 0.95mm 0.95mm
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