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X9421

Part Number	X9421
Manufacturer	Renesas
Description	Single Digitally Potentiometer
Published	Jun 3, 2020
Detailed Description	X9421 NOT RECOMMENDED FOR NEW DESIGNS POSSIBLE SUBSTITUTE PRODUCT ISL22416, ISL22419 Low Noise/Low Power/SPI Bus Singl...
Datasheet	X9421 PDF File

Overview

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.
The contents of the WCR controls the position of the wiper on the resistor array though the switches.
Power-up recalls the contents of the default data register (DR0) to the WCR.
The XDCP can be used as a three...

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