DATASHEET
ISL90841 FN8094
Rev 1.00
February 8, 2006 Quad Digitally Controlled Potentiometers (XDCPв„ў) Low Noise, Low Power I2C
The ISL90841 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
I2C bus interface. Each potentiometer has an associated
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.
All four potentiometers have one terminal tied to GND. The
DCPs can be used as a resistor divider or as two-terminal
variable resistors in a wide variety of applications including
control, parameter adjustments, and signal processing. Features Four potentiometers in one package 256 resistor taps -0.4% resolution I2C serial interface Wiper resistance: 70пЃ— typical @ 3.3V Standby current <5ВµA max Power supply: 2.7V to 5.5V 50kпЃ—, 10kпЃ— total resistance 14 Lead TSSOP Pb-free plus anneal available (RoHS compliant) Pinout
ISL90841
(14 LEAD TSSOP)
TOP VIEW
RH3 1 14 RW0 RW3 2 13 RH0 SCL 3 12 VCC SDA 4 11 A1 GND 5 10 A0 RW2 6 9 RH1 RH2 7 8 RW1 Ordering Information
PART NUMBER PART MARKING RESISTANCE OPTION …
