Low-Power Digital Potentiometers

First SOT23 Digital Potentiometer

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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).
MAX5160, MAX5161: Functional Diagram MAX5160, MAX5161: Functional Diagram Enlarge+

Key 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


  • LCD Screen Adjustment
  • Mechanical Potentiometer Replacements
  • Volume Control

See parametric specs for Digital Potentiometers (117)

Part NumberTaperPOTsControl InterfaceWiper MemoryStepsREND-TO-END
Res. Tol.
Temp. Coeff.
Wiper Resistance
typtypmaxSee Notes
MAX5160 Linear13-Wire SerialVolatile32
$0.79 @1k
$0.74 @1k

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
Product Reliability Reports: MAX5160.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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