1

®

FN6331.2

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

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ISL22349

Quad Digitally Controlled Potentiometers (XDCP™)

Wiper Only

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 combination of resistor elements and CMOS switches. The

position of the wipers are controlled by the user through the

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

measurement and signal processing.

Pinout

Features

• Four potentiometers in one package

• 128 resistor taps

- Three address pins, up to eight devices/bus

• Non-volatile storage of wiper position

• Wiper resistance: 70

Ω typical

• Shutdown mode

• Shutdown current 6.5µA max

• Power supply: 2.7V to 5.5V

•50k

Ω or 10kΩ total resistance

• High reliability

- Endurance: 1,000,000 data changes per bit per register

• 14 Ld TSSOP

• Pb-free plus anneal product (RoHS compliant)

ISL22349

(14 LD TSSOP)

TOP VIEW

RW0

SHDN

NC

A1

A0

NC

14

13

12

11

10

9

8

1

2

3

4

5

6

7

RW3

A2

SCL

SDA

GND

RW2

RW1

Ordering Information

PART NUMBER

PART MARKING

RESISTANCE OPTION

(k

Ω)

TEMP. RANGE

(°C)

PACKAGE

PKG. DWG. #

ISL22349UFV14Z

(Notes 1, 2)

22349 UFVZ

50

-40 to +125

14 Ld TSSOP

(Pb-Free)

M14.173

ISL22349WFV14Z

(Notes 1, 2)

22349 WFVZ

10

-40 to +125

14 Ld TSSOP

(Pb-Free)

M14.173

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” suffix for 1,000 Tape and Reel option

Data Sheet

September 15, 2006