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 190-4775
Tillv. art.nrMAX5437EUD+
VarumärkeMaxim Integrated
64,265 kr
Each (In a Tube of 96)
Enheter
3-Wire SPI, Microwire, QSPI 50kΩ 128 Linear - 1 Surface Mount TSSOP 14 Dual, Single 10 → 30 V ±5 to ±15V 5.1 x 4.5 x 0.95mm 0.95mm
RS-artikelnummer 189-7153
Tillv. art.nrDS1804-100+
VarumärkeMaxim Integrated
21,46 kr
Each (In a Tube of 50)
Enheter
Increment/Decrement 100kΩ 100 Linear Non-Volatile 1 Through Hole PDIP 8 Single 3 V, 5 V - 9.91 x 7.87 x 4.45mm 4.45mm
RS-artikelnummer 723-9741
Tillv. art.nrMCP4261-502E/P
VarumärkeMicrochip
10,495 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 923-1474
Tillv. art.nrX9C102SZ
40,515 kr
Each (In a Tube of 100)
Enheter
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-artikelnummer 160-1646
Tillv. art.nrAD5291BRUZ-20
VarumärkeAnalog Devices
43,254 kr
Each (In a Tube of 96)
Enheter
Serial-SPI 20kΩ 256 - Non-Volatile 1 Surface Mount TSSOP 14 Dual, Single 9 → 33 V ±9 → ±16.5V 5.1 x 4.5 x 1.05mm 1.05mm
RS-artikelnummer 912-6564
Tillv. art.nrAD5243BRMZ50
VarumärkeAnalog Devices
13,31 kr
Each (In a Tube of 50)
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 709-5660
Tillv. art.nrAD5161BRMZ5
VarumärkeAnalog Devices
17,226 kr
Each (In a Pack of 5)
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 538-8614
Tillv. art.nrAD5207BRUZ10
VarumärkeAnalog Devices
25,374 kr
Each (In a Pack of 5)
Enheter
Serial-2 Wire, Serial-I2C 10kΩ 256 Linear Volatile 2 Surface Mount TSSOP 14 Dual, Single 5 V ±2.5V 5 x 4.4 x 1mm 1mm
RS-artikelnummer 403-575
Tillv. art.nrMCP42050-E/SL
VarumärkeMicrochip
20,10 kr
Each (In a Pack of 5)
Enheter
Serial-SPI 50kΩ 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 497-2662
Tillv. art.nrAD5241BRZ100
VarumärkeAnalog Devices
24,796 kr
Each (In a Pack of 5)
Enheter
Serial-2 Wire, Serial-I2C 100kΩ 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 183-1690
Tillv. art.nrAD5243BRMZ100
VarumärkeAnalog Devices
19,619 kr
Each (In a Tube of 50)
Enheter
I2C, Serial-2 Wire 100kΩ 256 Linear Non-Volatile 2 Surface Mount MSOP 10 Single 2.7 → 5.5 V - 3.1 x 3.1 x 0.95mm 0.95mm
RS-artikelnummer 189-8439
Tillv. art.nrDS1804-050+
VarumärkeMaxim Integrated
25,168 kr
Each (In a Pack of 5)
Enheter
Increment/Decrement 50kΩ 100 Linear Non-Volatile 1 Through Hole PDIP 8 Single 3 V, 5 V - 9.91 x 7.87 x 4.45mm 4.45mm
RS-artikelnummer 190-4776
Tillv. art.nrMAX5468EUT+T
VarumärkeMaxim Integrated
6,206 kr
Each (On a Reel of 2500)
Enheter
- 10kΩ 32 Linear - 1 Surface Mount SOT-23 6 Single 2.7 → 5.5 V - 3 x 1.75 x 1.3mm 1.3mm
RS-artikelnummer 697-6861
Tillv. art.nrAD5245BRJZ10-R2
VarumärkeAnalog Devices
24,796 kr
Each (In a Pack of 5)
Enheter
Serial-3 Wire, Serial-I2C 10kΩ 256 - Volatile 1 Surface Mount SOT-23 8 Single 3 V, 5 V - 2.9 x 1.6 x 1.15mm 1.15mm
RS-artikelnummer 159-7531
Tillv. art.nrMCP4442-502E/ST
VarumärkeMicrochip
7,49 kr
Each (In a Tube of 96)
Enheter
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-artikelnummer 819-5771
Tillv. art.nrMCP4351T-503E/ST
VarumärkeMicrochip
8,885 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 709-5698
Tillv. art.nrAD5201BRMZ10
VarumärkeAnalog Devices
16,192 kr
Each (In a Pack of 5)
Enheter
Serial-3 Wire, Serial-SPI 10kΩ 33 Linear Volatile 1 Surface Mount MSOP 10 Dual, Single 3 V, 5 V ±2.5V 3 x 3 x 0.85mm 0.85mm
RS-artikelnummer 196-9011
Tillv. art.nrX9C102PIZ
49,638 kr
Each (In a Tube of 50)
Enheter
- - 32 - - - - - 8 - - - - -
RS-artikelnummer 190-4759
Tillv. art.nrDS1267BE-010+
VarumärkeMaxim Integrated
40,718 kr
Each (In a Tube of 74)
Enheter
Serial-3 Wire 10kΩ 256 Linear - 2 Surface Mount TSSOP 20 Single 4.5 → 5.5 V - 6.6 x 4.5 x 0.95mm 0.95mm
RS-artikelnummer 165-4162
Tillv. art.nrMCP45HV51-104E/ST
VarumärkeMicrochip
10,998 kr
Each (In a Tube of 96)
Enheter
Serial-I2C 100kΩ 256 Linear Volatile 1 Surface Mount TSSOP 14 Single 1.8 → 5.5 (Digital) V, 10 → 36 (Analogue) V - 5.1 x 4.5 x 1.05mm 1.05mm
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