DATASHEET
ISL90842 FN8096
Rev 1.00
January 16, 2006 Quad Digitally Controlled Variable Resistors Low Noise, Low Power I2C Bus, 256 Taps
The ISL90842 integrates four digitally controlled
potentiometers (DCP) configured as variable resistors on a
monolithic CMOS integrated circuit. Pinout
ISL90842
(14 LEAD TSSOP)
TOP VIEW 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.
The DCPs can be used as two-terminal variable resistors in
a wide variety of applications including control, parameter
adjustments, and signal processing. 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 Features Four variable resistors 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) Ordering Information
PART NUMBER PART MARKING RESISTANCE OPTION
(пЃ—) TEMP RANGE
(В°C) PACKAGE ISL90842UIV1427Z (Notes 1 & 2) 90842UI27Z 50K -40 to +85 14 Ld TSSOP (Pb-Free) ISL90842WIV1427Z (Notes 1 & 2) 90842WI27Z 10K -40 to +85 14 Ld TSSOP (Pb-Free) NOTES:
1. Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate …