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. 786-0792
Mfr. Part No.DS1809-010+
£2.715
Each (In a Pack of 2)
Units
Contact/Closure 10kΩ 64 Linear Non-Volatile 1 Through Hole PDIP 8 Single 4.5 → 5.5 V - 9.91 x 7.87 x 4.45mm 4.45mm
RS Stock No. 165-9395
Mfr. Part No.DS1809-010+
£2.322
Each (In a Tube of 50)
Units
Contact/Closure 10kΩ 64 Linear Non-Volatile 1 Through Hole PDIP 8 Single 4.5 → 5.5 V - 9.91 x 7.87 x 4.45mm 4.45mm
RS Stock No. 732-7456
Mfr. Part No.DS1804-010+
£2.13
Each
Units
Increment 10kΩ 100 Linear Non-Volatile 1 Through Hole PDIP 8 Single 5 V - 9.91 x 7.87 x 4.45mm 4.45mm
RS Stock No. 165-9184
Mfr. Part No.DS1804-010+
£1.814
Each (In a Tube of 50)
Units
Increment 10kΩ 100 Linear Non-Volatile 1 Through Hole PDIP 8 Single 5 V - 9.91 x 7.87 x 4.45mm 4.45mm
RS Stock No. 139-284
Mfr. Part No.DS18030-010+
£3.79
Each
Units
Serial-2 Wire 10kΩ 256 Linear Volatile 2 Through Hole PDIP 16 Single 3 V, 5 V - 19.43 x 7.87 x 4.45mm 4.45mm
RS Stock No. 177-6853
Mfr. Part No.DS18030-010+
£3.083
Each (In a Tube of 25)
Units
Serial-2 Wire 10kΩ 256 Linear Volatile 2 Through Hole PDIP 16 Single 3 V, 5 V - 19.43 x 7.87 x 4.45mm 4.45mm
RS Stock No. 146-1116
Mfr. Part No.DS1804-050+
£1.814
Each (In a Tube of 50)
Units
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 Stock No. 139-335
Mfr. Part No.DS1804-050+
£2.13
Each
Units
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 Stock No. 540-2108
Mfr. Part No.DS1801+
£4.62
Each
Units
Serial-3 Wire 45kΩ 64 Log Volatile 2 Through Hole PDIP 14 Single 3 V, 5 V - 19.43 x 7.87 x 4.45mm 4.45mm
RS Stock No. 165-8961
Mfr. Part No.DS1801+
£3.732
Each (In a Tube of 25)
Units
Serial-3 Wire 45kΩ 64 Log Volatile 2 Through Hole PDIP 14 Single 3 V, 5 V - 19.43 x 7.87 x 4.45mm 4.45mm
RS Stock No. 177-6874
Mfr. Part No.DS1804Z-010+T&R
£1.359
Each (On a Reel of 2500)
Units
Increment 10kΩ 100 Linear Non-Volatile 1 Surface Mount SMT 8 Single 5 V - 9.91 x 7.87 x 4.45mm 4.45mm
RS Stock No. 761-7854
Mfr. Part No.DS1804Z-010+T&R
£2.08
Each
Units
Increment 10kΩ 100 Linear Non-Volatile 1 Surface Mount SMT 8 Single 5 V - 9.91 x 7.87 x 4.45mm 4.45mm
RS Stock No. 923-5511
Mfr. Part No.DS1804Z-010+
£1.523
Each (In a Tube of 100)
Units
Increment/Decrement 10kΩ 100 Linear Non-Volatile 1 Surface Mount SOIC 8 Single 3 V, 5 V - 5 x 4 x 1.5mm 1.5mm
RS Stock No. 139-458
Mfr. Part No.DS1804Z-010+
£2.15
Each
Units
Increment/Decrement 10kΩ 100 Linear Non-Volatile 1 Surface Mount SOIC 8 Single 3 V, 5 V - 5 x 4 x 1.5mm 1.5mm
RS Stock No. 165-9567
Mfr. Part No.DS1845E-050+
£2.869
Each (In a Tube of 96)
Units
Serial-3 Wire, Serial-I2C 50kΩ 256 Linear Non-Volatile 2 Surface Mount TSSOP 14 Single 2.7 → 5.5 V - 5.1 x 4.5 x 0.95mm 0.95mm
RS Stock No. 146-1245
Mfr. Part No.MAX5402EUA+
£1.462
Each (In a Tube of 50)
Units
Serial-SPI 10kΩ 256 Linear Volatile 1 Surface Mount μMAX 8 Single 5.5 V - 3.05 x 3.05 x 0.95mm 0.95mm
RS Stock No. 732-9711
Mfr. Part No.MAX5481EUD+
£2.96
Each
Units
Serial-SPI 10kΩ 1024 Linear Non-Volatile 1 Surface Mount TSSOP 14 Dual, Single 5.25 V ±2.5V 5.1 x 4.5 x 0.95mm 0.95mm
RS Stock No. 732-7961
Mfr. Part No.MAX5402EUA+
£1.72
Each
Units
Serial-SPI 10kΩ 256 Linear Volatile 1 Surface Mount μMAX 8 Single 5.5 V - 3.05 x 3.05 x 0.95mm 0.95mm
RS Stock No. 165-9720
Mfr. Part No.MAX5481EUD+
£2.504
Each (In a Tube of 96)
Units
Serial-SPI 10kΩ 1024 Linear Non-Volatile 1 Surface Mount TSSOP 14 Dual, Single 5.25 V ±2.5V 5.1 x 4.5 x 0.95mm 0.95mm
RS Stock No. 165-9166
Mfr. Part No.DS1804-100+
£1.814
Each (In a Tube of 50)
Units
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