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 144-9093
製造零件編號MCP41010-E/P
BrandMicrochip
HK$11.12
毎管:60 個
單位
Serial-SPI 10kΩ 256 Linear - 1 Through Hole PDIP 8 Single 3.3 V, 5 V - 9.27 x 6.35 x 3.3mm 3.3mm
RS庫存編號 403-676
製造零件編號MCP41010-E/P
BrandMicrochip
HK$13.26
/個 (每包:5個)
單位
Serial-SPI 10kΩ 256 Linear - 1 Through Hole PDIP 8 Single 3.3 V, 5 V - 9.27 x 6.35 x 3.3mm 3.3mm
RS庫存編號 889-5878
製造零件編號MCP41010-I/SN
BrandMicrochip
HK$10.357
毎管:100 個
單位
Serial-SPI 10kΩ 256 Linear - 1 Surface Mount SOIC 8 Single 3.3 V, 5 V - 4.9 x 3.9 x 1.25mm 1.25mm
RS庫存編號 669-6367
製造零件編號MCP42010-I/P
BrandMicrochip
HK$18.23
/個 (每包:2個)
單位
Serial-SPI 10kΩ 256 Linear - 2 Through Hole PDIP 14 Single 3.3 V, 5 V - 19.05 x 6.35 x 3.3mm 3.3mm
RS庫存編號 146-0134
製造零件編號MCP42010-I/P
BrandMicrochip
HK$15.23
毎管:30 個
單位
Serial-SPI 10kΩ 256 Linear - 2 Through Hole PDIP 14 Single 3.3 V, 5 V - 19.05 x 6.35 x 3.3mm 3.3mm
RS庫存編號 628-3762
製造零件編號MCP41010-I/SN
BrandMicrochip
HK$12.608
/個 (每包:5個)
單位
Serial-SPI 10kΩ 256 Linear - 1 Surface Mount SOIC 8 Single 3.3 V, 5 V - 4.9 x 3.9 x 1.25mm 1.25mm
RS庫存編號 144-5722
製造零件編號MCP41100-E/P
BrandMicrochip
HK$11.247
毎管:60 個
單位
Serial-SPI 100kΩ 256 Linear - 1 Through Hole PDIP 8 Single 3.3 V, 5 V - 9.27 x 6.35 x 3.3mm 3.3mm
RS庫存編號 806-5298
製造零件編號AD5175BRMZ-10
HK$33.29
/個 (每包:2個)
單位
Serial-3 Wire, Serial-I2C 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庫存編號 912-2770
製造零件編號MCP41100-E/SN
BrandMicrochip
HK$11.243
毎管:100 個
單位
Serial-SPI 100kΩ 256 Linear - 1 Surface Mount SOIC 8 Single 3.3 V, 5 V - 4.9 x 3.9 x 1.25mm 1.25mm
RS庫存編號 160-1643
製造零件編號AD5272BRMZ-100
HK$28.75
毎管:50 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 160-4482
製造零件編號AD5171BRJZ5-R2
HK$19.60
個 (在毎卷:250)
單位
I2C, Serial-2 Wire 5kΩ 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 819-7095
製造零件編號AD5171BRJZ5-R2
HK$29.61
/個 (每包:5個)
單位
I2C, Serial-2 Wire 5kΩ 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 403-743
製造零件編號MCP41100-E/SN
BrandMicrochip
HK$13.26
/個 (每包:5個)
單位
Serial-SPI 100kΩ 256 Linear - 1 Surface Mount SOIC 8 Single 3.3 V, 5 V - 4.9 x 3.9 x 1.25mm 1.25mm
RS庫存編號 403-654
製造零件編號MCP41100-E/P
BrandMicrochip
HK$13.26
/個 (每包:5個)
單位
Serial-SPI 100kΩ 256 Linear - 1 Through Hole PDIP 8 Single 3.3 V, 5 V - 9.27 x 6.35 x 3.3mm 3.3mm
RS庫存編號 806-5317
製造零件編號AD5272BRMZ-100
HK$37.57
/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 160-1639
製造零件編號AD5175BRMZ-10
HK$25.50
毎管:50 個
單位
Serial-3 Wire, Serial-I2C 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庫存編號 921-5352
製造零件編號X9313WSZ
HK$35.34
/個 (每包:2個)
單位
Serial-3 Wire 10kΩ 32 Linear Non-Volatile 1 Surface Mount SOIC 8 Single 5 V - 5 x 4 x 1.5mm 1.5mm
RS庫存編號 819-5673
製造零件編號MCP4331T-502E/ML
BrandMicrochip
HK$8.73
個 (在毎卷:3300)
單位
SPI 6kΩ 129 Linear Volatile 4 Surface Mount QFN 20 Single 1.8 → 5.5 V - 4 x 4 x 0.95mm 0.95mm
RS庫存編號 761-7872
製造零件編號MAX5422ETA+T
HK$22.60
單位
Serial-SPI 50kΩ 256 Linear Non-Volatile 1 Surface Mount TDFN 8 Single 5 V - 3.1 x 3.1 x 0.8mm 0.8mm
RS庫存編號 819-5676
製造零件編號MCP4331T-502E/ST
BrandMicrochip
HK$8.73
個 (在毎卷:2500)
單位
SPI 6kΩ 129 Linear Volatile 4 Surface Mount TSSOP 20 Single 1.8 → 5.5 V - 6.6 x 4.5 x 1.05mm 1.05mm