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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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庫存編號 732-7456
製造零件編號DS1804-010+
TWD98.00
單位
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庫存編號 709-4734
製造零件編號AD5243BRMZ2.5
TWD91.00
單位
Serial-3 Wire, Serial-I2C 2.5kΩ 256 - Volatile 2 Surface Mount MSOP 10 Single 3 V, 5 V - 3 x 3 x 0.85mm 0.85mm
RS庫存編號 799-0256
製造零件編號MCP41HV51-503E/ST
BrandMicrochip
TWD52.80
/個 (每包:4個)
單位
Serial-SPI 50kΩ 256 - Volatile 1 Surface Mount TSSOP 14 Dual, Single 36 V ±18V 5.1 x 4.5 x 1.05mm 1.05mm
RS庫存編號 629-3264
製造零件編號AD5254BRUZ50
TWD232.00
單位
Serial-2 Wire, Serial-I2C 50kΩ 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庫存編號 697-6865
製造零件編號AD5245BRJZ5-R2
TWD93.20
/個 (每包:5個)
單位
Serial-3 Wire, Serial-I2C 5kΩ 256 - Volatile 1 Surface Mount SOT-23 8 Single 3 V, 5 V - 2.9 x 1.6 x 1.15mm 1.15mm
RS庫存編號 189-8316
製造零件編號DS1804-010+
TWD99.40
/個 (每包:5個)
單位
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庫存編號 697-6859
製造零件編號AD5161BRMZ10
TWD65.20
/個 (每包:5個)
單位
Serial-2 Wire, Serial-3 Wire, Serial-I2C, Serial-SPI 10kΩ 256 - Volatile 1 Surface Mount MSOP 10 Single 3 V, 5 V - 3 x 3 x 0.85mm 0.85mm
全新
RS庫存編號 196-9013
製造零件編號X9C102SIZ
TWD166.10
毎管:100 個
單位
- - 32 - - - - - 8 - - - - -
RS庫存編號 161-0581
製造零件編號AD5260BRUZ20
TWD127.40
毎管:96 個
單位
Serial-2 Wire, Serial-I2C 20kΩ 256 Linear Volatile 1 Surface Mount TSSOP 14 Dual, Single 15 V ±5V 5 x 4.4 x 1mm 1mm
RS庫存編號 799-7737
製造零件編號MAX5479EUD+
TWD116.00
單位
Serial-2 Wire 100kΩ 256 Linear Non-Volatile 2 Surface Mount TSSOP 14 Single 2.7 → 5.25 V - 5.1 x 4.5 x 0.95mm 0.95mm
RS庫存編號 190-4766
製造零件編號DS1807E+
TWD165.90
毎管:96 個
單位
- 45kΩ 65 Log - 2 Surface Mount TSSOP 14 Single 2.7 → 5.5 V - 5.1 x 4.5 x 0.95mm 0.95mm
RS庫存編號 724-0047
製造零件編號MCP4362-503E/ST
BrandMicrochip
TWD66.00
單位
Serial-SPI 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庫存編號 190-4764
製造零件編號DS1803E-010+
TWD152.60
毎管:96 個
單位
- 10kΩ 256 Linear Volatile 2 Surface Mount TSSOP 14 Single 2.7 → 5.5 V - 5.1 x 4.5 x 0.95mm 0.95mm
全新
RS庫存編號 196-9012
製造零件編號X9C102PIZ
TWD235.00
/個 (每包:2個)
單位
- - 32 - - - - - 8 - - - - -
RS庫存編號 189-8554
製造零件編號DS1804Z-010+
TWD98.80
/個 (每包:5個)
單位
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庫存編號 159-7799
製造零件編號AD7376ARUZ50
TWD233.20
毎管:96 個
單位
Serial-3 Wire, Serial-SPI 50kΩ 128 - Volatile 1 Surface Mount TSSOP 14 Dual, Single 30 V ±15V 5 x 4.4 x 1mm 1mm
RS庫存編號 809-9301
製造零件編號AD5171BRJZ10-R2
TWD120.40
Each (On a Tape of 5)
單位
Serial-2 Wire 10kΩ 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庫存編號 497-1209
製造零件編號AD5262BRUZ50
TWD182.00
單位
Serial-2 Wire, Serial-I2C 50kΩ 256 Linear Volatile 2 Surface Mount TSSOP 16 Dual, Single 15 V ±5V 5 x 4.4 x 1.05mm 1.05mm
RS庫存編號 806-5317
製造零件編號AD5272BRMZ-100
TWD153.50
/個 (每包:2個)
單位
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庫存編號 160-1642
製造零件編號AD5272BRMZ-20
TWD117.30
毎管:50 個
單位
Serial-3 Wire, Serial-I2C 20kΩ 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