General Description

The MAX5160/MAX5161 linear-taper digital potentiometers perform the same function as a mechanical potentiometer or a variable resistor. They consist of a fixed resistor and a wiper contact with 32 tap points that are digitally controlled by three lines for the 8-pin MAX5160 or by two lines for the 6-pin MAX5161.

These parts are ideal for applications requiring digitally controlled resistors. Three resistance values are available for each part type: 50k?, 100k?, and 200k?. A nominal resistor temperature coefficient of 50ppm/°C end-to-end and only 5ppm/°C ratiometric makes the MAX5160 ideal for applications requiring a low-temperature-coefficient variable resistor, such as low-tempco, adjustable-gain circuit configurations.

The MAX5160 is available in an 8-pin μMAX package, and the MAX5161 is available in a 6-pin SOT23 package. Both devices are guaranteed over the extended industrial temperature range (-40°C to +85°C).

Features

? 32 Tap Positions

? 50k?, 100k?, and 200k? Resistance Values

? 400? Wiper Resistance

? ±25 Resistance Tolerance

? 3-Wire Serial Data Input

? ±1LSB DNL

? ±0.5LSB INL

? 100nA Supply Current

? +2.7V to +5.5V Single-Supply Operation

? Power-On Reset: Wiper Goes to Midscale

?? (position 16)

? ±2kV ESD Protection

? Small-Footprint Packages

?? 6-Pin SOT23 (MAX5161)

?? 8-Pin μMAX (MAX5160)

? Glitchless Switching Between the Resistor Taps

Applications

?? LCD Screen Adjustment

?? Volume Control

?? Mechanical Potentiometer Replacement