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 dont 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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Description Price 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 Stock No. 190-4760
Mfr. Part No.DS1267BS-010+
$7.229
Each (In a Tube of 46)
units
- 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 Stock No. 921-5848
Mfr. Part No.X9C102PZ
$9.10
Each (In a Pack of 2)
units
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 Stock No. 820-9340
Mfr. Part No.AD5246BKSZ10-RL7
$2.22
Each (In a Pack of 5)
units
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 Stock No. 496-8916
Mfr. Part No.AD5263BRUZ20
$10.75
Each
units
Serial-2 Wire, Serial-3 Wire, Serial-I2C, Serial-SPI 20kΩ 256 Linear Volatile 4 Surface Mount TSSOP 24 Dual, Single 5 V ±5V 7.8 x 4.4 x 1.05mm 1.05mm
RS Stock No. 177-2861
Mfr. Part No.MCP4661T-502E/ML
BrandMicrochip
$1.465
Each (On a Reel of 3300)
units
I2C 5kΩ 257 Log Non-Volatile 2 Surface Mount QFN 16 Single - - 4 x 4 x 0.95mm 0.95mm
RS Stock No. 165-3384
Mfr. Part No.MCP4019T-104E/LT
BrandMicrochip
$0.596
Each (On a Reel of 3000)
units
Serial-I2C 100kΩ 128 Linear Volatile 1 Surface Mount SC-70 5 Single 1.8 → 5.5 V - 2.25 x 1.35 x 1mm 1mm
RS Stock No. 192-1637
Mfr. Part No.DS1803Z-100+
$8.99
Each (In a Pack of 2)
units
Serial-2 Wire 100kΩ 256 Linear Volatile 2 Surface Mount SOIC 16 Single 2.7 → 5.5 V - 10 x 4 x 1.5mm 1.5mm
RS Stock No. 160-4554
Mfr. Part No.AD5174BRMZ-10
$4.56
Each (In a Tube of 50)
units
Serial-SPI 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 Stock No. 183-2045
Mfr. Part No.AD5243BRMZ100
$3.97
Each (In a Pack of 5)
units
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 Stock No. 820-9343
Mfr. Part No.AD5246BKSZ50-RL7
$2.38
Each (In a Pack of 5)
units
Serial-3 Wire, Serial-I2C 50kΩ 128 - Non-Volatile 1 Surface Mount SC-70 6 Single 2.7 → 5.5 V - 2.2 x 1.35 x 1mm 1mm
RS Stock No. 177-7122
Mfr. Part No.AD8403ARZ1
$9.17
Each (In a Tube of 31)
units
Serial-3 Wire, Serial-SPI 1kΩ 256 Linear Volatile 4 Surface Mount SOIC W 24 Single 3 V, 5 V - 15.6 x 7.6 x 2.35mm 2.35mm
RS Stock No. 806-5317
Mfr. Part No.AD5272BRMZ-100
$6.71
Each (In a Pack of 2)
units
Serial-3 Wire, Serial-I2C 100kΩ 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 Stock No. 145-6629
Mfr. Part No.AD8402ANZ10
$6.45
Each (In a Tube of 25)
units
Serial-3 Wire 10kΩ 256 - - 1 Through Hole PDIP 14 Single 2.7 → 5.5 V - 19.69 x 7.11 x 4.95mm 4.95mm
RS Stock No. 796-8821
Mfr. Part No.AD5144BRUZ100
$10.55
Each
units
Serial-SPI 100kΩ 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 Stock No. 726-3980
Mfr. Part No.MCP4462-503E/ST
BrandMicrochip
$2.87
Each (In a Pack of 2)
units
Serial-I2C 50kΩ 257 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 Stock No. 106-7037
Mfr. Part No.AD5263BRUZ20
$8.55
Each (In a Tube of 62)
units
Serial-2 Wire, Serial-3 Wire, Serial-I2C, Serial-SPI 20kΩ 256 Linear Volatile 4 Surface Mount TSSOP 24 Dual, Single 5 V ±5V 7.8 x 4.4 x 1.05mm 1.05mm
RS Stock No. 629-3286
Mfr. Part No.AD5227BUJZ10-R2
$3.106
Each (In a Pack of 5)
units
Serial-3 Wire 10kΩ 64 - Volatile 1 Surface Mount TSOT 8 Single 3 V, 5 V - 2.9 x 1.6 x 0.87mm 0.87mm
New
RS Stock No. 191-3917
Mfr. Part No.DS18030-100+
$6.633
Each (In a Tube of 25)
units
- 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 Stock No. 912-7520
Mfr. Part No.AD5254BRUZ10
$7.29
Each (In a Tube of 75)
units
Serial-2 Wire, Serial-I2C 10kΩ 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 Stock No. 158-5283
Mfr. Part No.AD5220BRZ50
$3.58
Each (In a Tube of 98)
units
Serial-3 Wire 50kΩ 128 - Volatile 1 Surface Mount SOIC 8 Single 3 V, 5 V - 5 x 4 x 1.5mm 1.5mm
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