X9251 Datasheet (Renesas) - Quad Digitally Potentiometers

X9251, Quad Digitally Potentiometers

PIN SYMBOL FUNCTION 1 SO Serial Data Output for SPI bus 2 A0 Device Address for SPI bus (see Note 4) 3 RW3 Wiper Terminal of DCP3 4 RH3 High Terminal of DCP3 5 RL3 Low Terminal of DCP3 7 VCC System Supply Voltage 8 RL0 Low Terminal of DCP0 9 RH0 High Terminal of DCP0 10 RW0 W

DATASHEET X9251 Single Supply/Low Power/256-Tap/SPI Bus, Quad Digitally-Controlled (XDCP™) Potentiometer FN8166 Rev 7.00 January 14, 2021 The X9251 integrates four digitally controlled potentiometers (XDCP) on a monolithic CMOS integrated circuit.

The digitally controlled potentiometers are implemented with a combination of resistor elements and CMOS switches.

The position of the wipers are controlled by the user through the SPI bus interface.

Each potentiometer has associated with it a volat

X9251 Features

* Four potentiometers in one package

* 256 resistor taps

* 0.4% resolution

* SPI serial interface for write, read, and transfer operations of the potentiometer

* Wiper resistance: 100Ω typical at VCC = 5V

* 4 Nonvolatile data registers for each potentiom