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ISL90841

Quad Digitally Controlled Potentiometers (XDCP™) Low Noise, Low Power I2C

Renesas Electronics 

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ISL90841

Quad Digitally Controlled Potentiometers (XDCP™) Low Noise, Low Power I2C

FN8094

Rev 1.00

February 8, 2006

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: 70 typical @ 3.3V

• Standby current <5µA max

• Power supply: 2.7V to 5.5V

• 50k, 10k total resistance

• 14 Lead TSSOP

• Pb-free plus anneal available (RoHS compliant)

Pinout

ISL90841

(14 LEAD TSSOP)

TOP VIEW

RH3 1

RW3 2

SCL 3

SDA 4

GND 5

RW2 6

RH2 7

14 RW0

13 RH0

12 VCC

11 A1

10 A0

9 RH1

8 RW1

Ordering Information

PART NUMBER

ISL90841UIV1427Z (Notes 1 & 2)

PART MARKING

90841UI27Z

RESISTANCE OPTION

()

50K

TEMP RANGE

(°C)

-40 to +85

PACKAGE

14 Ld TSSOP (Pb-Free)

ISL90841WIV1427Z (Notes 1 & 2)

90841WI27Z

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

termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL

classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.

2. Add “-TK” to suffix for Tape and Reel.

FN8094 Rev 1.00

February 8, 2006

Page 1 of 12

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