The MCP42100 digital potentiometer features two independent channels, 8-bit resolution (256 wiper steps), and an industry-standard SPI™ serial interface. The wiper position varies linearly and is controlled via the SPI interface. The MCP42100 has a resistance value of 100 kohm, outstanding AC and DC characteristics, and consumes <1 µA during static operation. Applications for the MCP42100 digital potentiometer include audio equipment (volume and tone controls), servo-motor control, battery charging and control, communications (line impedance matching), power supplies, instrumentation (gain, offset adjust), LCD contrast control and programmable filters. The MCP42100 is available in 14-pin PDIP, SOIC and TSSOP packages.

Parameter Name	Value
Temp. Range (°C)	-40 to +125
Volatile / Non Volatile	Volatile
Number of Taps	256
Resistance (ohms) K	100
# per Package	2
INL (Max)	1
DNL (Max)	1
Interface	SPI

Features

SPI(tm) compatible serial interface, < 1 uA standby current, 1 LSB DNL, 1 LSB INL

MCP41XXX/42XXX Datasheet