1

®

FN6176.0

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

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ISL22326

Dual Digitally Controlled Potentiometers (XDCP™)

128 Taps

The ISL22326 integrates two digitally controlled

potentiometers (XDCP) 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 three-terminal potentiometers or

as two-terminal variable resistors in a wide variety of

applications including control, parameter adjustments, and

signal processing.

Pinout

Features

• Two 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 @ 3.3V

• Shutdown mode

• Shutdown current 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)

ISL22326

(14 LD TSSOP)

TOP VIEW

A2

1

2

3

4

5

6

7

SDA

SCL

8

9

10

14

13

12

11

SHDN

RW0

RL0

RH0

A1

RW1

RL1

RH1

A0

GND

Ordering Information

PART NUMBER

PART MARKING

RESISTANCE OPTION

(k

Ω)

TEMP. RANGE

(°C)

PACKAGE

PKG. DWG. #

ISL22326UFV14Z

(Notes 1, 2)

22326 UFVZ

50

-40 to +125

14 Ld TSSOP

(Pb-free)

M14.173

ISL22326WFV14Z

(Notes 1, 2)

22326 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

July 17, 2006