MCP42010-I/P

MCP42010-I/P is a dual digital potentiometer with SPI™ interface. The wiper position of the varies linearly and is controlled via an industry-standard SPI interface. The devices consume <lt/>1µA 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 dual has a active-low SHDN pin that performs the same function in hardware. During shutdown mode, the contents of the wiper register can be changed and the potentiometer returns from shutdown to the new value. The wiper is reset to the mid-scale position (80h) upon power-up. The active-low RS (reset) pin implements a hardware reset and also returns the wiper to mid-scale.

• 256 taps for each potentiometer, SPI™ serial interface (mode 0,0 and 1,1)
• Low power CMOS technology
• Supply current, static is 0.01µA typ (active low CS/SHDN/RS = VDD = 5.5V, SO = Open, TA = +25°C)
• Multiple devices can be daisy-chained together, hardware shutdown pin
• Shutdown feature open circuits of all resistors for maximum power savings
• Operating voltage range from 2.7 to 5.5V (VDD = 5V, VSS = 0V, VB = 0V, TA = +25°C)
• Rheostat tempco is 800ppm/°C typ (VDD = 5V, VSS = 0V, VB = 0V, TA = +25°C)
• Differential non-linearity is ±1/4LSB typ (VDD = 5V, VSS = 0V, VB = 0V, TA = +25°C)
• Integral non-linearity is ±1/4LSB typ (VDD = 5V, VSS = 0V, VB = 0V, TA = +25°C)
• 14 pin DIP package, industrial operating temperature range from -40 to 85°C