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 145-3237
製造零件編號CAT5113LI-50-G
HK$16.603
毎管:50 個
單位
Up/Down 50kΩ 100 Linear Non-Volatile 1 Through Hole PDIP 8 Single 2.5 → 6 V - 10.16 x 7.11 x 4.95mm 4.95mm
RS庫存編號 821-3027
製造零件編號CAT5114LI-10-G
HK$16.248
/個 (每包:5個)
單位
Up/Down 10kΩ 32 Linear Non-Volatile 1 Through Hole PDIP 8 Single 2.5 → 6 V - 10.16 x 7.11 x 4.95mm 4.95mm
RS庫存編號 821-3009
製造零件編號CAT5110SDI-50GT3
HK$7.828
/個 (每包:10個)
單位
Serial-2 Wire 60kΩ 32 Linear - 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 163-0433
製造零件編號CAT5221WI-25-T1
HK$28.886
個 (在毎卷:1000)
單位
Serial-I2C 25kΩ 64 Linear Non-Volatile 1 Surface Mount SOIC 20 Single 2.5 → 6 V - 6.6 x 4.5 x 1.05mm 1.05mm
RS庫存編號 821-3018
製造零件編號CAT5110TBI-50GT3
HK$8.727
/個 (每包:10個)
單位
Serial-2 Wire 60kΩ 32 Linear - 1 Surface Mount SOT-23 6 Single 2.7 → 5.5 V - 3 x 1.8 x 1.3mm 1.3mm
RS庫存編號 163-0430
製造零件編號CAT5114LI-10-G
HK$13.303
毎管:50 個
單位
Up/Down 10kΩ 32 Linear Non-Volatile 1 Through Hole PDIP 8 Single 2.5 → 6 V - 10.16 x 7.11 x 4.95mm 4.95mm
RS庫存編號 163-0434
製造零件編號CAT5221WI-50-T1
HK$28.886
個 (在毎卷:1000)
單位
Serial-I2C 50kΩ 64 Linear Non-Volatile 1 Surface Mount SOIC 20 Single 2.5 → 6 V - 6.6 x 4.5 x 1.05mm 1.05mm
RS庫存編號 821-3046
製造零件編號CAT5221WI-25-T1
HK$28.195
/個 (每包:2個)
單位
Serial-I2C 25kΩ 64 Linear Non-Volatile 1 Surface Mount SOIC 20 Single 2.5 → 6 V - 6.6 x 4.5 x 1.05mm 1.05mm
RS庫存編號 821-3049
製造零件編號CAT5221WI-50-T1
HK$28.195
/個 (每包:2個)
單位
Serial-I2C 50kΩ 64 Linear Non-Volatile 1 Surface Mount SOIC 20 Single 2.5 → 6 V - 6.6 x 4.5 x 1.05mm 1.05mm
RS庫存編號 781-4033
製造零件編號CAT5118TBI-50GT3
HK$10.304
/個 (每包:5個)
單位
Serial-2 Wire 50kΩ 32 Linear - 1 Surface Mount SOT-23 5 Single 2.7 → 5.5 V - 2.9 x 1.6 x 1.3mm 1.3mm
RS庫存編號 781-4045
製造零件編號CAT5121TBI-50GT3
HK$9.718
/個 (每包:5個)
單位
Serial-2 Wire 50kΩ 16 Linear - 1 Surface Mount SOT-23 6 Single 2.7 → 5.5 V - 3 x 1.8 x 1.3mm 1.3mm
RS庫存編號 821-3030
製造零件編號CAT5125TBI-10GT3
HK$11.612
/個 (每包:5個)
單位
Serial-2 Wire 12kΩ 32 Linear - 1 Surface Mount SOT-23 6 Single 2.7 → 5.5 V - 3 x 1.8 x 1.3mm 1.3mm
RS庫存編號 163-0902
製造零件編號CAT5121TBI-50GT3
HK$12.379
個 (在毎卷:3000)
單位
Serial-2 Wire 50kΩ 16 Linear - 1 Surface Mount SOT-23 6 Single 2.7 → 5.5 V - 3 x 1.8 x 1.3mm 1.3mm
RS庫存編號 145-3701
製造零件編號CAT5114LI-00-G
HK$10.605
毎管:50 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
RS庫存編號 821-3024
製造零件編號CAT5114LI-00-G
HK$9.594
/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
RS庫存編號 163-0431
製造零件編號CAT5114LI-50-G
HK$13.303
毎管:50 個
單位
Up/Down 50kΩ 32 Linear Non-Volatile 1 Through Hole PDIP 8 Single 2.5 → 6 V - 10.16 x 7.11 x 4.95mm 4.95mm
RS庫存編號 821-3015
製造零件編號CAT5113LI-50-G
HK$25.888
/個 (每包:5個)
單位
Up/Down 50kΩ 100 Linear Non-Volatile 1 Through Hole PDIP 8 Single 2.5 → 6 V - 10.16 x 7.11 x 4.95mm 4.95mm
RS庫存編號 163-0429
製造零件編號CAT5110TBI-50GT3
HK$6.30
個 (在毎卷:3000)
單位
Serial-2 Wire 60kΩ 32 Linear - 1 Surface Mount SOT-23 6 Single 2.7 → 5.5 V - 3 x 1.8 x 1.3mm 1.3mm
RS庫存編號 163-0428
製造零件編號CAT5110SDI-50GT3
HK$6.426
個 (在毎卷:3000)
單位
Serial-2 Wire 60kΩ 32 Linear - 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 821-3021
製造零件編號CAT5114LI-50-G
HK$11.214
/個 (每包:5個)
單位
Up/Down 50kΩ 32 Linear Non-Volatile 1 Through Hole PDIP 8 Single 2.5 → 6 V - 10.16 x 7.11 x 4.95mm 4.95mm