ISL22349 Datasheet | Renesas

OBSOLETE PRODUCT POSSIBLE SUBSTITUTE PRODUCT ISL22346 Quad Digitally Controlled Potentiometers (XDCP™) Low Noise, Low Power, I2C™ Bus, 128 Taps, Wiper Only FN6331 Rev 3.00 May 28, 2009 The ISL22349 integrates four digitally controlled potentiometers (DCP) and non-volatile memory on a monolithic CMOS integrated circuit. The digitally controlled potentiometers are implemented with a bination of resistor elements and CMOS switches. The position of the wipers are controlled by the user through the I2C bus interface. Each potentiometer has an associated volatile Wiper Register (WR) and a non-volatile Initial Value Register (IVR) that can be directly written to and read by the user. The contents of the WR controls the position of the wiper. At power up the device recalls the contents of the two DCP’s IVR to the corresponding WRs. The DCPs can be used as a voltage divider in a wide variety of applications including control, parameter adjustments, AC...