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 158-0469
製造零件編號AD5160BRJZ10-R2
TWD58.30
個 (在毎卷:250)
單位
Serial-3 Wire, Serial-SPI 10kΩ 256 Linear 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 823-3567
製造零件編號MCP4241-103E/ST
BrandMicrochip
TWD37.00
/個 (每包:10個)
單位
SPI 10kΩ 129 - Non-Volatile 2 Surface Mount TSSOP 14 Single 2.7 → 5.5 V - 5.1 x 4.5 x 1.05mm 1.05mm
RS庫存編號 923-1474
製造零件編號X9C102SZ
TWD152.90
毎管:100 個
單位
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庫存編號 669-6367
製造零件編號MCP42010-I/P
BrandMicrochip
TWD74.00
/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 165-2115
製造零件編號MCP41HV51-503E/ST
BrandMicrochip
TWD44.00
毎管:96 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 189-8502
製造零件編號DS1804-100+
TWD98.40
/個 (每包:5個)
單位
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庫存編號 161-0608
製造零件編號AD5241BRZ10
TWD75.40
毎管:56 個
單位
Serial-2 Wire, Serial-I2C 10kΩ 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庫存編號 821-3024
製造零件編號CAT5114LI-00-G
TWD85.60
/個 (每包:5個)
單位
Up/Down 100kΩ 32 Linear Non-Volatile 1 Through Hole PDIP 8 Single 2.5 → 6 V - 10.16 x 7.11 x 4.95mm 4.95mm
全新
RS庫存編號 196-9011
製造零件編號X9C102PIZ
TWD200.50
毎管:50 個
單位
- - 32 - - - - - 8 - - - - -
RS庫存編號 144-9093
製造零件編號MCP41010-E/P
BrandMicrochip
TWD45.40
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 759-0727
製造零件編號AD5293BRUZ-100
TWD218.00
單位
Serial-SPI 100kΩ 1024 Linear Volatile - Surface Mount TSSOP 14 Dual, Single 9 → 33 V ±9 → ±16.5V 5.1 x 4.5 x 1.2mm 1.2mm
RS庫存編號 189-8178
製造零件編號DS1804Z-050+
TWD100.40
/個 (每包:5個)
單位
Increment/Decrement 50kΩ 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 819-5761
製造零件編號MCP4351T-104E/ST
BrandMicrochip
TWD35.60
個 (在毎卷:2500)
單位
SPI 120kΩ 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庫存編號 819-5705
製造零件編號MCP4341T-104E/ML
BrandMicrochip
TWD37.00
個 (在毎卷:3300)
單位
SPI 120kΩ 129 Linear Non-Volatile 4 Surface Mount QFN 20 Single 2.7 → 5.5 V - 4 x 4 x 0.95mm 0.95mm
RS庫存編號 158-0470
製造零件編號AD5160BRJZ5-R2
TWD61.80
個 (在毎卷:250)
單位
Serial-3 Wire, Serial-SPI 5kΩ 256 Linear 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 165-4679
製造零件編號MCP42050-E/SL
BrandMicrochip
TWD67.40
毎管:57 個
單位
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庫存編號 820-9340
製造零件編號AD5246BKSZ10-RL7
TWD50.60
/個 (每包:5個)
單位
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庫存編號 190-5273
製造零件編號DS1267BE-010+
TWD189.00
/個 (每包:2個)
單位
- 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庫存編號 759-1317
製造零件編號AD8403ARUZ1
TWD247.00
單位
Serial-3 Wire, Serial-SPI 1kΩ 256 Linear Volatile - Surface Mount TSSOP 24 Single 2.7 → 5.5 V - 7.9 x 4.5 x 1.2mm 1.2mm
RS庫存編號 190-5368
製造零件編號MAX5477EUD+
TWD127.00
/個 (每包:5個)
單位
I2C 10kΩ 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