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 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 921-5548
Tillv. art.nrX9C103SIZ
60,28 kr
Each (In a Pack of 2)
Enheter
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-artikelnummer 190-4760
Tillv. art.nrDS1267BS-010+
VarumärkeMaxim Integrated
42,904 kr
Each (In a Tube of 46)
Enheter
- 10kΩ 256 Linear - 2 Surface Mount SO 16 Single 4.5 → 5.5 V - 10.5 x 7.6 x 2.35mm 2.35mm
RS-artikelnummer 161-0608
Tillv. art.nrAD5241BRZ10
VarumärkeAnalog Devices
20,996 kr
Each (In a Tube of 56)
Enheter
Serial-2 Wire, Serial-I2C 10kΩ 256 - Volatile 1 Surface Mount SOIC 14 Dual, Single 3 V, 5 V ±2.5V 8.75 x 4 x 1.5mm 1.5mm
RS-artikelnummer 819-5658
Tillv. art.nrMCP4331T-103E/ML
VarumärkeMicrochip
8,885 kr
Each (On a Reel of 3300)
Enheter
SPI 12kΩ 129 Linear Volatile 4 Surface Mount QFN 20 Single 1.8 → 5.5 V - 4 x 4 x 0.95mm 0.95mm
RS-artikelnummer 160-4479
Tillv. art.nrAD5171BRJZ100-R2
VarumärkeAnalog Devices
16,018 kr
Each (On a Reel of 250)
Enheter
I2C, Serial-2 Wire 100kΩ 64 Linear Non-Volatile 1 Surface Mount SOT-23 8 Single 2.7 → 5.5 V - 2.9 x 1.6 x 1.3mm 1.3mm
RS-artikelnummer 697-7278
Tillv. art.nrAD8400ARZ100
VarumärkeAnalog Devices
29,16 kr
Each
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 921-5844
Tillv. art.nrX9241AUSIZ
103,19 kr
Each
Enheter
Serial-2 Wire 50kΩ 64 Linear Non-Volatile 4 Surface Mount SOIC 20 Single 5 V - 12.8 x 7.49 x 2.34mm 2.34mm
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 191-3176
Tillv. art.nrDS1267BS-100+
VarumärkeMaxim Integrated
45,29 kr
Each
Enheter
- 100kΩ 256 Linear Volatile 2 Surface Mount SOIC 16 Single 4.5 → 5.5 V - 10.5 x 7.6 x 2.35mm 2.35mm
RS-artikelnummer 168-4106
Tillv. art.nrAD8402ARZ100
VarumärkeAnalog Devices
37,172 kr
Each (In a Tube of 56)
Enheter
Serial-3 Wire, Serial-SPI 100kΩ 256 Linear Volatile 2 Surface Mount SOIC 14 Single 3 V, 5 V - 8.75 x 4 x 1.5mm 1.5mm
RS-artikelnummer 738-6736
Tillv. art.nrMCP4012T-503E/CH
VarumärkeMicrochip
4,446 kr
Each (On a Tape of 5)
Enheter
Serial-2 Wire 50kΩ 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 913-0784
Tillv. art.nrAD5254BRUZ1
VarumärkeAnalog Devices
43,472 kr
Each (In a Tube of 75)
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 159-6646
Tillv. art.nrMCP4362-103E/ST
VarumärkeMicrochip
13,704 kr
Each (In a Tube of 96)
Enheter
Serial-SPI 10kΩ 257 Linear Non-Volatile 1 Surface Mount TSSOP 14 Single 2.7 → 5.5 V - 5.1 x 4.5 x 1.05mm 1.05mm
RS-artikelnummer 497-2678
Tillv. art.nrAD5241BRZ1M
VarumärkeAnalog Devices
24,754 kr
Each (In a Pack of 5)
Enheter
Serial-2 Wire, Serial-I2C 1000kΩ 256 - Volatile 1 Surface Mount SOIC 14 Dual, Single 3 V, 5 V ±2.5V 8.75 x 4 x 1.5mm 1.5mm
RS-artikelnummer 821-3024
Tillv. art.nrCAT5114LI-00-G
VarumärkeON Semiconductor
11,284 kr
Each (In a Pack of 5)
Enheter
Up/Down 100kΩ 32 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 770-7761
Tillv. art.nrMCP41010-I/P
VarumärkeMicrochip
12,46 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 687-8474
Tillv. art.nrMCP4018T-103E/LT
VarumärkeMicrochip
4,45 kr
Each
Enheter
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-artikelnummer 817-3579
Tillv. art.nrMCP4542T-503E/MS
VarumärkeMicrochip
5,31 kr
Each (On a Reel of 2500)
Enheter
Serial-I2C 50kΩ 129 Linear, Log Non-Volatile 1 Surface Mount MSOP 8 Single 5.5 V - 3 x 3 x 0.95mm 0.95mm
RS-artikelnummer 161-0582
Tillv. art.nrAD5262BRUZ20
VarumärkeAnalog Devices
40,728 kr
Each (In a Tube of 96)
Enheter
Serial-2 Wire, Serial-I2C 20kΩ 256 Linear Volatile 2 Surface Mount TSSOP 16 Dual, Single 15 V ±5V 5 x 4.4 x 1.05mm 1.05mm
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