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Digital potentiometers (digipots) are used to trim and scale analog signals. They provide an output resistance that is variable based on digital inputs and so are sometimes referred to as resistive digital-to-analog converters (RDACs).

Digipots are typically available with linear or logarithmic tap points. In addition, Maxim offers some further variations of the basic digipot. Nonvolatile digipots retain their last programmed wiper position when the power supply is switched off. OTP digpots set the wiper's power-on reset (POR) position to a user-defined value.

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Featured Products

MAX5440 Stereo Volume Control with Rotary Encoder Interface

MAX5440 Stereo Volume Control with Rotary Encoder Interface

The MAX5440 dual, 40kΩ logarithmic taper volume control features a debounced up/down interface f...
MAX5128 128-Tap, Nonvolatile, Linear-Taper Digital Potentiometer in 2mm x 2mm µDFN Package

MAX5128 128-Tap, Nonvolatile, Linear-Taper Digital Potentiometer in 2mm x 2mm µDFN Package

The MAX5128 nonvolatile, single, linear-taper, digital potentiometer performs the function of a ...
MAX5486 Stereo Volume Control with Pushbutton Interface

MAX5486 Stereo Volume Control with Pushbutton Interface

The MAX5486 dual 40kΩ logarithmic taper volume control features a debounced pushbutton up/down i...
MAX5481 10-Bit, Nonvolatile, Linear-Taper Digital Potentiometers

MAX5481 10-Bit, Nonvolatile, Linear-Taper Digital Potentiometers

The MAX5481–MAX5484 10-bit (1024-tap) nonvolatile, linear-taper, programmable voltage-dividers a...
MAX5394 Single, 256-Tap Volatile, SPI, Low-Voltage Linear Taper Digital Potentiometer

MAX5394 Single, 256-Tap Volatile, SPI, Low-Voltage Linear Taper Digital Potentiometer

The MAX5394 single, 256-tap volatile, low-voltage linear taper digital potentiometer offers thre...
MAX5389 Dual, 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometer

MAX5389 Dual, 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometer

The MAX5389 dual, 256-tap, volatile, low-voltage linear taper digital potentiometer offers three...
MAX5395 Single, 256-Tap Volatile, I<sup>2</sup>C, Low-Voltage Linear Taper Digital Potentiometer

MAX5395 Single, 256-Tap Volatile, I2C, Low-Voltage Linear Taper Digital Potentiometer

The MAX5395 single, 256-tap volatile, low-voltage linear taper digital potentiometer offers thre...
MAX5388 Dual, 256-Tap, Volatile Low-Voltage Linear Taper Digital Potentiometers

MAX5388 Dual, 256-Tap, Volatile Low-Voltage Linear Taper Digital Potentiometers

The MAX5386/MAX5388 dual, 256-tap, volatile, low- voltage linear taper digital potentiometers of...
MAX5386 Dual, 256-Tap, Volatile Low-Voltage Linear Taper Digital Potentiometers

MAX5386 Dual, 256-Tap, Volatile Low-Voltage Linear Taper Digital Potentiometers

The MAX5386/MAX5388 dual, 256-tap, volatile, low- voltage linear taper digital potentiometers of...
MAX5387 Dual, 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometer

MAX5387 Dual, 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometer

The MAX5387 dual, 256-tap, volatile, low-voltage linear taper digital potentiometer offers three...
MAX5393 Dual 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometers

MAX5393 Dual 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometers

The MAX5391/MAX5393 dual 256-tap, volatile, low-voltage linear taper digital potentiometers offe...
MAX5391 Dual 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometers

MAX5391 Dual 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometers

The MAX5391/MAX5393 dual 256-tap, volatile, low-voltage linear taper digital potentiometers offe...
DS1809 Dallastat

DS1809 Dallastat

The DS1809 Dallastat is a single, 64-position digital potentiometer which provides both a simple...
DS1267B Dual Digital Potentiometer

DS1267B Dual Digital Potentiometer

The DS1267B has two 256-position potentiometers, with wiper positions each set by stored 8-bit v...
DS1868B 2-Channel Digital Potentiometer

DS1868B 2-Channel Digital Potentiometer

The DS1868B has two 256-position potentiometers, with wiper positions each set as 8-bit values. ...

MAX5395LEVKIT Evaluation Kit for the MAX5395L, MAX5395M, and MAX5395N

The MAX5395L evaluation kit (EV kit) demonstrates the MAX5395L single, 256-tap volatile, low-vol...

MAX5394MEVKIT Evaluation Kit for the MAX5394L, MAX5394M, and MAX5394N

The MAX5394M evaluation kit (EV kit) demonstrates the MAX5394M single, 256-tap volatile, low-vol...
DS1855 Dual Nonvolatile Digital Potentiometer and Secure Memory

DS1855 Dual Nonvolatile Digital Potentiometer and Secure Memory

The DS1855 dual nonvolatile (NV) digital potentiometer and secure memory consists of one 100-pos...
MAX5456 Stereo Audio Taper Potentiometers with Pushbutton Interface

MAX5456 Stereo Audio Taper Potentiometers with Pushbutton Interface

The MAX5456/MAX5457 dual, logarithmic taper digital potentiometers feature a simple pushbutton i...
MAX5457 Stereo Audio Taper Potentiometers with Pushbutton Interface

MAX5457 Stereo Audio Taper Potentiometers with Pushbutton Interface

The MAX5456/MAX5457 dual, logarithmic taper digital potentiometers feature a simple pushbutton i...

Reference Designs

Carmel (MAXREFDES18#): High Accuracy Analog Current/Voltage Output

The Carmel (MAXREFDES18#) subsystem reference design is an isolated, high-accuracy analog curren...

3V DACs Used in ±10V Applications

This application note discribes using a 3V DAC, then level shifting and amplifying the output to...