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X9279 - Digitally Potentiometer

Datasheet Summary

Features

  • 256 Resistor Taps.
  • 2-Wire Serial Interface for Write, Read, and Transfer Operations of the Potentiometer.
  • Wiper Resistance, 100 Typical @ 5V.
  • 16 Non-volatile Data Registers for Each Potentiometer.
  • Non-volatile Storage of Multiple Wiper Positions.
  • Power-on Recall. Loads Saved Wiper Position on Power-up.
  • Standby Current < 5µA Max.
  • VCC: 2.7V to 5.5V Operation.
  • 50k, 100k Versions of End-to-End Resistance.

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Datasheet preview – X9279

Datasheet Details

Part number X9279
Manufacturer Intersil
File Size 394.31 KB
Description Digitally Potentiometer
Datasheet download datasheet X9279 Datasheet
Additional preview pages of the X9279 datasheet.

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    Full PDF Text Transcription

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    POSSIOBBLISSELOS9LU5E8BT1SE0T,PIITSRULODT9DEa5U8tPa1CR1STOhDeUetCT X9279 Single Supply/Low Power/256-Tap/2-Wire Bus September 23, 2009 FN8175.4 Single Digitally-Controlled (XDCP™) Potentiometer The X9279 integrates a single digitally controlled potentiometer (XDCP) on a monolithic CMOS integrated circuit. The digital controlled potentiometer is implemented using 255 resistive elements in a series array. Between each element are tap points connected to the wiper terminal through switches. The position of the wiper on the array is controlled by the user through the 2-Wire bus interface. The potentiometer has associated with it a volatile Wiper Counter Register (WCR) and a four non-volatile Data Registers that can be directly written to and read by the user.
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