Product_description: ['Description the mcp41xxx and mcp42xxx devices are 256-position, digital potentiometers available in 10 kω, 50kω and 100 kω resistance versions. Themcp41xxx is a single-channel device and is offered inan 8-pin pdip or soic package. The mcp42xxx con-tains two independent channels in a 14-pin pdip, soicor tssop package. The wiper position of themcp41xxx/42xxx varies linearly and is controlled via an industry-standard spi interface. The devices consume <1 μa during static operation. A software shutdown feature is provided that disconnects the “a”terminal from the resistor stack and simultaneously connects the wiper to the “b” terminal. In addition, the dualmcp42xxx has a shdn pin that performs the same function in hardware. During shutdown mode, the con-tents of the wiper register can be changed and thepotentiometer returns from shutdown to the new value. The wiper is reset to the mid-scale position (80h) uponpower-up. The rs (reset) pin implements a hardwarereset and also returns the wiper to mid-scale. Themcp42xxx spi interface includes both the si and sopins, allowing daisy-chaining of multiple devices. Channel-to-channel resistance matching on the mcp42xxxvaries by less than 1%. These devices operate from asingle 2. 7 - 5. 5v supply and are specified over theextended and industrial temperature ranges. Features 256 taps for each potentiometer potentiometer values for 10 kω, 50 kω and 100 kω single and dual versions spi serial interface (mode 0, 0 and 1, 1) ±1 lsb max inl & dnl low power cmos technology 1 μa maximum supply current in static operation multiple devices can be daisy-chained together (mcp42xxx only) shutdown feature open circuits of all resistors for maximum power savings hardware shutdown pin available on mcp42xxx only single supply operation (2. 7v - 5. 5v) industrial temperature range: -40°c to +85°c extended temperature range: -40°c to +125°c']

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