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: 50kΩ, 100kΩ, and 200kΩ. 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

♦ 50kΩ, 100kΩ, and 200kΩ Resistance Values

♦ 400Ω 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