Product category:
Analogue and Mixed Signal ICs
News Release from: Xicor | Subject: X9252 family
Edited by the Electronicstalk Editorial
Team on 20 August 2003
Four pots in one with digital control
Broadening its DCP range of products, Xicor has announced the X9252 family of quad 256-tap nonvolatile digital programmable potentiometers.
Broadening its DCP range of products, Xicor has announced the X9252 family of quad 256-tap nonvolatile digital programmable potentiometers The digitally controlled potentiometers provide the opportunity to use an integral component for applications that require initial calibration as well as dynamic control, thus simplifying design, and saving board space
This article was originally published on Electronicstalk on 24 Jan 2002 at 8.00am (UK)
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Each of the four digitally controlled potentiometers in the X9252 family features a 256-tap wiper with 255-segmented resistors.
In addition, potentiometer specific registers store multiple wiper positions for nonvolatile recall on device power up, eliminating the need for an onboard initialising microcontroller.
A wide range of total resistance options are available: 2.8, 10, 50 and 100kohm.
Programming the potentiometer is achieved through a traditional two-wire serial interface or through an up/down interface that provides single-step tuning of the potentiometer wiper position.
With this added option, users can perform initial manufacturing calibration with the two-wire interface in addition to real-time dynamic adjustments.
The wiper protect function of the X9252 also introduces a control mechanism for designers and production technicians to set, save and reset the wiper position.
Target applications include process controls requiring retention parameters, data acquisition systems requiring preconfigured voltage reference levels and signal-conditioning circuits requiring zero offset and span correction in various sensors (such as temperature, pressure, IR etc).
Power amplifier biasing for RF, audio and amplifiers requiring gain or phase control are also applications of the X9252.
The innovation of the X9252 dual interface is the best solution for dynamic control or real-time calibration systems.
The two-wire serial interface is ideal for the initial programming of the potentiometer whereas the up/down interface is best for dynamic incremental tuning of the system.
Production samples are available in 14-lead TSSOP packaging.
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