DATASHEET
ISL23315 FN7778
Rev 2.00
August 12, 2015 Single, Low Voltage Digitally Controlled Potentiometer (XDCPв„ў)
The ISL23315 is a volatile, low voltage, low noise, low power, I2C
Busв„ў, 256 Taps, single digitally controlled potentiometer (DCP),
which integrates DCP core, wiper switches and control logic on
a monolithic CMOS integrated circuit.
The digitally controlled potentiometer is implemented with a
combination of resistor elements and CMOS switches. The
position of the wipers are controlled by the user through the
I2C bus interface. The potentiometer has an associated
volatile Wiper Register (WR) that can be directly written to and
read by the user. The contents of the WR controls the position
of the wiper. When powered on, the ISL23315’s wiper will
always commence at mid-scale (128 tap position).
The low voltage, low power consumption, and small package
of the ISL23315 make it an ideal choice for use in battery
operated equipment. In addition, the ISL23315 has a VLOGIC
pin allowing down to 1.2V bus operation, independent from the
VCC value. This allows for low logic levels to be connected
directly to the ISL23315 without passing through a voltage
level shifter. …