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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.
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2002-07-30 Xicor rolls dual audio potentiometer
A digitally programmable dual 32-tap potentiometer IC from Xicor Inc. enables full digital control of audio volume via front-panel pushbuttons or remote control, eliminating the use of mechanical potentiometersl.
2004-01-26 Xicor releases 32-tap digitally controlled potentiometer
Xicor Inc. has disclosed that its X93254 is the industry?s first dual non-volatile linear taper 32-tap digitally controlled potentiometer.
2002-02-28 Wujian Spike rotary potentiometer has >15,000 cycles switch life
The WH168 rotary potentiometer has a switch life >15,000 cycles at a test rate of 20 cycles/min, as well as a mechanical endurance life >10,000 cycles.
2002-08-20 WECA potentiometer ICs have selectable output buffer
The WMS72xx series of 256-tap, nonvolatile, digitally programmable potentiometer ICs feature a selectable output buffer and can be programmed by a microcontroller through a SPI interface.
2002-12-09 Using an external potentiometer to adjust contrast voltage
This application note describes how an external potentiometer can be used for voltage control.
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.
2006-04-17 SMD potentiometer targets wireless transceiver apps
The new SMD trimmer potentiometer from Shaanxi Hongxing Electronic Components facilitates pick-and-place centering design and comes in a 4mm package.
2008-07-30 Rotary potentiometer garners multiple design wins
Since production began nearly a year ago, BI has been awarded four major design wins with the versatile rotary potentiometer.
2006-05-15 Programmable potentiometer has on-chip EEPROM
Catalyst Semiconductor expanded its family of digitally-programmable potentiometers with the CAT5133, a 15V, increment/decrement interface, 128-tap (7bit) device
2003-03-20 Productwell sliding potentiometer lasts >10,000 cycles
The S20711ED1 sliding type potentiometer offers a resistance of up to 1 megohm with 20 percent tolerance and a lifespan >10,000 cycles.
2008-07-25 Potentiometer switch trims panel real estate
Electro-Mech has introduced a potentiometer switch that offers both rotary and push-on momentary functionality for maximum operation control.
2007-08-09 Potentiometer switch suits space-limited applications
The compact tactile feel momentary potentiometer switch from Electro-Mech saves panel space in applications where there are tight design limitations.
2010-04-21 Potentiometer switch packs rotary, push-on functions
From Electro-Mech comes the SW44687 potentiometer switch assembly that offers both rotary and push-on functionality for maximum operation control.
2006-02-07 Potentiometer suits portable electronics
Maxim Integrated Products introduced the MAX5128, a 128-tap, nonvolatile digital potentiometer for portable battery-powered electronics.
2008-07-15 Panel potentiometer is heavy duty
Vishay Intertechnology Inc. introduces a new low cost, long-life panel potentiometer with a low-temperature coefficient down to 150ppm/C and 9.6mm size.
2006-07-25 New 1.5-inch potentiometer promises 50 million cycles
The new 1.5-inch stepper motorized potentiometer from Spectrum Sensors & Controls has a minimum proven rotational life of 50 million cycles.
2002-10-24 Matsushita potentiometer occupies 16mm2 footprint
The EWVYC potentiometer and EVEN encoder occupies a footprint of 16mm2 and is designed for use in control panels of automobile air conditioners.
2016-02-22 Isolated potentiometer design (Part 2)
In the second instalment of this series, we describe the core of the isolated analogue-actuated potentiometerthe translinear circuits.
2016-02-17 Isolated potentiometer design (Part 1)
Here is an isolated analogue-actuated potentiometer design intended as a template for general application wherever a manually-actuated pot is to be replaced and actuated by an analogue voltage.
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.
2002-04-19 Electro-Mech potentiometer provides dual control
The SW44175 backlit potentiometer switch from Electro-Mech Components offers rotary and on/off pushbutton functionality, and is used in industrial/avionics displays, audio controls, instrument panels, and other high-density panels.
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.
2002-05-02 Dallas IC combines potentiometer, EEPROM, MicroMonitor
Designed to provide microprocessor supervision, NV storage, and analog function control in embedded systems, the DS1846 combines three linear-taper potentiometers, 256 bytes of EEPROM, and a MicroMonitor into a 20-pin TSSOP.
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.
2001-04-09 Controlling a DS1803 digital potentiometer using an 8051 microprocessor to generate 2-wire signals
This application note presents a simple hardware and software solution for controlling the DS1803 digital potentiometer using Dallas Semiconductor's DS87C520 8051-compatible microprocessor.
2003-11-07 China National resistor, potentiometer rated at 0.5W/70C
The CEIECSXD6-011 resistor/potentiometer from China National Electronics Imp & Exp Shaanxi Co. Ltd features a resistance range of 10 ohms to 2 megohms, and resistance tolerance of 10 percent or 20 percent.
2003-02-18 Chengde potentiometer rated at 50V
The FRB-108 potentiometer of Chengde Electronics Component Fty offers resistance values ranging from 200 ohms to 1 megohm.
2002-02-07 Catalyst Semiconductor digital potentiometer offers 1 percent resolution
The CAT5111 and CAT5113 digital potentiometers are designed to replace mechanical potentiometers and trimmers in systems requiring automated or self-calibration.
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