The MCP41/423X devices are volatile, 7-bit (129 wiper steps) digital potentiometers with an SPI compatible interface. The MCP41/42XX family is available with end-to-end resistor values of 5KΩ, 10KΩ, 50kΩ and 100KΩ. These devices offer a variety of configurations simplifying design while minimizing cost, package size and pin count.

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• 7-bit: 128 Resistors with 129 Taps to VSS and VDD
• SPI compatible interface
• Automatic Recall of Potentiometer Wiper Settings Resistance Values: 5kΩ, 10kΩ, 50kΩ, 100kΩ
• Absolute (Rheostat): <100 ppm (typ.)
•  Ratiometric (Potentiometer): <10 ppm (typ.) 
• Low Wiper Resistance: 100Ω (typ.) 
• Low-Power Operation: 1µA Max Static Current 
• Wide Operating Voltage: 1.8V to 5.5V
• Extended Temperature Range: -40°C to +125°C