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What is a digital potentiometer?
A digital potentiometer is a variable resistor that can be used as a voltage divider. It adjusts and trims electronic circuits similar to variable resistors, rheostats and mechanical potentiometers. Also called digital POT, RDAC, or digipot, these compact devices can be used to calibrate system tolerances or dynamically control system parameters.
total search123 articles
2002-11-13 Using multiple DS1267 Digital Potentiometers with an 8051 microprocessor generating 3-wire signals
This application note provides an overview of different configurations for communicating to multiple DS1267s with a common bus.
2001-04-09 Using multiple DS1267 digital potentiometers with an 8051 microprocessor generating 3-wire signals
This application note provides an overview of different configurations for communicating to multiple DS1267 digital potentiometers with a common bus. It also provides the hardware and software required for communicating to two DS1267s daisy-chained together in series
2003-06-28 Using Digital Potentiometers in Adjustable Step-Down DC-DC Converter Design
This application note describes how to use a digital ptoentimeter to generate an adjustable voltage supply a MAX1776 Step-Down DC-DC Converter
2010-08-24 Using digital potentiometers for programmable amplifier gain
This application note discusses implementations of programmable gain circuits using an op amp and a digital potentiometer.
2003-12-20 Using a DS1802 Pushbutton Digital Potentiometer to Create an Audio Preamp with Attentuator
This application note shows how to use the DS1802 Potentiometer to create a pre-amplifier circuit with a pushbutton controllable volume for two stereo channels
2003-06-28 Step-Up DC-DC Converter Calibration and Adjustment Using a Digital Potentiometer
This application describes the use of a digital potentiometer in the feedback loop of a step-up DC-DC converter to provide calibration and/or adjustment of the output voltage.
2007-10-24 SPI interface characterizes digital potentiometers
The latest non-volatile digital potentiometers from Microchip Technology Inc. feature SPI interface
2003-09-19 Resolution enhancements of Digital Potentiometers with Multiple Devices
This application note explains how digital potentiometers can be configured to optimize the resolution of a given application
2006-02-07 Potentiometer suits portable electronics
Maxim Integrated Products introduced the MAX5128, a 128-tap, nonvolatile digital potentiometer for portable battery-powered electronics.
2005-08-05 New digital pots from Maxim housed in 3-by-3mm TQFN
The new MAX5481-MAX5484 devices from Maxim Integrated Products are touted to be the industry's first pin-selectable up/down or SPI-compatible, 1024-tap nonvolatile digital potentiometers packaged in a 3-by-3mm, 16-pin TQFN
2005-04-05 Maxim's digital pots with EEPROM
Maxim unveiled what it claims as the industry's smallest 256-step, dual, nonvolatile digital potentiometers with on-chip EEPROM and packaged in a 3-by-3mm TQFN
2005-08-18 Maxim unveils new digital pots
The MAX5481-MAX5484 devices from Maxim Integrated Products are touted to be the industry's first pin-selectable up/down or SPI-compatible, 1024-tap nonvolatile digital potentiometers packaged in a 3-by-3mm, 16-pin TQFN
2004-10-29 Maxim unveils 'smallest I?C, 32-tap nonvolatile digital pots
Maxim disclosed that they have developed the industry's smallest I?C, 32-tap, nonvolatile digital potentiometers
2003-11-26 Maxim digital pots have on-chip EEPROM
Maxim Integrated Products has introduced what it claims is the industry's first family of 32-tap, non-volatile digital potentiometers with on-chip EEPROM
2001-04-11 LCD contrast control using Dallas Semiconductor digital potentiometers
This application note describes how to use the DS1668/DS1669 digital potentiometers as drop-in replacements for the standard mechanical potentiometer used in LCDs to control contrast.
2004-01-08 Kiu Wai digital pots have 500 milliohms contact resistance
Kiu Wai Electronics Mfg Ltd has announced the availability of its YG-10S digital potentiometer series that features a contact resistance of 500 milliohms.
2007-09-27 How to construct a pushbutton controller for the DS1803/DS1805 digital potentiometers
This application note describes a simple method that uses pushbuttons and a microcontroller to change the resistance of a DS1803 or DS1805 digital potentiometer.
2009-05-11 How to calculate the wiper voltage of a digital potentiometer
This application note explains the issues involved in the calculation of the wiper voltage of a digital potentiometer, breaking the process into smaller steps.
2005-12-22 Digital pots with push-button interface
Maxim Integrated Products' new dual, 32-tap, audio-taper digital potentiometers feature a debounced, simple push-button interface for volume and balance control
2006-12-21 Digital pots offer alternative to DACs
Catalyst's five new digital programmable potentiometers offer low-noise, stable and reliable alternatives to DACs and mechanical potentiometers
2003-08-21 Digital pots cut non-volatile memory price
Analog Devices' AD517x family features compact "set & forget" digital potentiometers that features automatic resistance lock
2002-04-16 Digital potentiometers enhance volume controls
This technical news feature discusses some the advantages and disadvantages of implementing digital potentiometers to shrink volume control size in audio systems
2006-03-07 Digital potentiometers consume 0.3A
Microchip Technology announced a family of low-power, low-voltage, 6bit digital potentiometers that are said to be cost and size competitive with mechanical versions
2008-03-13 Digital pot with EEPROM runs record write cycles
A dual 8bit digital potentiometer with high-performance EEPROM and data retention and write cycles has been launched by austriamicrosystems for communications, industrial, medical and automotive applications.
2007-03-22 Digital pot offers one-time wiper programmability
Catalyst's new digitally programmable potentiometer, the CAT5126, offers one-time wiper programmability via a two-wire serial interface for applications requiring one-time calibration
2001-06-11 Digital audio amplifier gain control using logarithmic XICOR digitally controlled potentiometers
This application note describes how to design a digital audio amplifier gain control using logarithmic digitally controlled potentiometers
2002-05-14 Dallas releases single digital potentiometer
The DS1805 single digital potentiometer contains a single 10-kiloohm potentiometer, and is suitable for use in CCFL inverter circuits that use a two-wire bus interface.
2002-08-29 Dallas IC integrates three digital potentiometer
The DS3903 digital potentiometer IC contains three nonvolatile, low-temperature coefficient digital potentiometers that can be accessed through a 2-wire bus.
2007-08-15 DACs vs. digital potentiometers: Which is right for my application
Designers and procurement engineers whose applications require a finely tuned analog output controlled by a digital input have two options: digital potentiometers and DACs
2003-06-20 Controlling the BatMod with a Digital Potentiometer
This application note describes a control scheme for the BatMod dc/dc converter module using Vicor's E2POT digital potentiometer.
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