X9421 - Single Digitally Potentiometer

Datasheet Summary

Description

The X9421 integrates a single digitally controlled potentiometer (XDCP) on a monolithic CMOS integrated circuit.

The digital controlled potentiometer is implemented using 63 resistive elements in a series array.

Between each element are tap points connected to the wiper terminal through switches.

Features

Single Voltage Potentiometer.
64 Resistor Taps.
SPI Serial Interface for Write, Read, and Transfer Operations of the Potentiometer.
Wiper Resistance, 150 Typical at 5V.
4 Non-Volatile Data Registers.
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.
2.5k, 10k End to End Resistance.

Renesas

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Datasheet Details

Part number	X9421
Manufacturer	Renesas
File Size	799.38 KB
Description	Single Digitally Potentiometer
Datasheet	X9421 Datasheet
Additional preview pages of the X9421 datasheet.

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Full PDF Text Transcription

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X9421 NOT RECOMMENDED FOR NEW DESIGNS POSSIBLE SUBSTITUTE PRODUCT ISL22416, ISL22419 Low Noise/Low Power/SPI Bus Single Digitally Controlled (XDCP™) Potentiometer DATASHEET FN8196 Rev.1.00 January 14, 2009 Description The X9421 integrates a single digitally controlled potentiometer (XDCP) on a monolithic CMOS integrated circuit. The digital controlled potentiometer is implemented using 63 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 SPI 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.

Published: Jun 3, 2020 |