DESCRIPTION

· The MCP41XXX and MCP42XXX are 256-position digital potentiometers with resistance values of 10 kΩ, 50 kΩ, and 100 kΩ.

· MCP41XXX is a single-channel device in an 8-pin PDIP or SOIC package, while MCP42XXX is a dual-channel device in a 14-pin PDIP, SOIC, or TSSOP package.

· The wiper position is controlled via an SPI interface, with a software shutdown feature that disconnects the "A" terminal and connects the wiper to the "B" terminal.

· MCP42XXX includes a SHDN pin for hardware shutdown and supports daisy-chaining of multiple devices.

· The wiper resets to mid-scale (80h) on power-up or via the RS pin.

· Operates on a single 2.7V - 5.5V supply and is specified for industrial (-40°C to +85°C) and extended (-40°C to +125°C) temperature ranges.

FEATURES

· 256 taps for each potentiometer.

· Available in 10 kΩ, 50 kΩ, and 100 kΩ resistance values.

· Single (MCP41XXX) and dual (MCP42XXX) versions.

· SPI™ serial interface (mode 0,0 and 1,1).

· ±1 LSB max INL & DNL.

· Low power CMOS technology with <1 µA supply current in static operation.

· Shutdown feature for maximum power savings.

· Hardware shutdown pin on MCP42XXX.

· Single supply operation (2.7V - 5.5V).

· Industrial and extended temperature ranges.

APPLICATIONS

· Precision analog signal adjustment.

· Volume control in audio systems.

· LCD contrast and brightness control.

· Programmable voltage references.

· Sensor calibration and trimming.

· Industrial control systems.

· Automotive electronics.

· Portable and battery-powered devices.