MAX5160

19-1435; Rev 1; 4/99 Low-Power Digital Potentiometers 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 extendedindustrial temperature range (-40°C to +85°C). o 32 Tap Positions o 50kΩ, 100kΩ, and 200kΩ Resistance Values o 400Ω Wiper Resistance o ±25% Resistance Tolerance o 3-Wire Serial Data Input o ±1LSB DNL o ±0.5LSB INL o 100nA Supply Current o Single-Supply Operation: +2.7V to +5.5V o Power-On Reset: Wiper Goes to Midscale (position 16) o ±2kV ESD Protection o Small-Footprint Packages 6-Pin SOT23 (MAX5161) 8-Pin µMAX (MAX5160) o Glitchless Switching Between the Resistor Taps Features MAX5160/MAX5161 Applications LCD Screen Adjustment Volu...