1

FN6423.2

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

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ISL22343

Quad Digitally Controlled Potentiometer (XDCP™)

The ISL22343 integrates four digitally controlled

potentiometers (DCP), control logic and non-volatile memory

on a monolithic CMOS integrated circuit.

The digitally controlled potentiometer is 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 (WRi) and a non-volatile Initial Value

Register (IVRi) that can be directly written to and read by the

user. The contents of the WRi control the position of the

corresponding wiper. At power up the device recalls the

contents of the DCP’s IVRi to the correspondent WRi.

The ISL22343 also has 11 general purpose non-volatile

registers that can be used as storage of lookup table for

multiple wiper position or any other valuable information.

The ISL22343 features a dual supply, that is beneficial for

applications requiring a bipolar range for DCP terminals

between V- and VCC.

Each DCP 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.

Features

• Four potentiometers in one package

• 256 resistor taps

- Three address pins, up to eight devices per bus

• Non-volatile EEPROM storage of wiper position

• 11 General Purpose non-volatile registers

• High reliability

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

- Register data retention: 50 years @ T

• Wiper resistance: 70

 typical @ 1mA

• Standby current <4µA max

• Shutdown current <4µA max

• Dual power supply

- VCC = 2.25V to 5.5V

- V- = -2.25V to -5.5V

•10k

 50kor 100k total resistance

• 20 Ld TSSOP or 20 Ld QFN

• Pb-free (RoHS compliant)

Ordering Information

PART NUMBER

(Notes 1, 2)

PART

MARKING

RESISTANCE

OPTION

(k

)

TEMP.

RANGE

(°C)

PACKAGE

(Pb-free)

PKG.

DWG. #

ISL22343TFV20Z

(No longer available, recommended replacement: ISL22343WFR20Z-TK)

22343 TFVZ

100

-40 to +125 20 Ld TSSOP M20.173

ISL22343TFR20Z

(No longer available, recommended replacement: ISL22343WFR20Z-TK

22343 TFRZ

100

-40 to +125 20 Ld QFN

L20.5x5

ISL22343UFV20Z

(No longer available, recommended replacement: ISL22343WFR20Z-TK

22343 UFVZ

50

-40 to +125 20 Ld TSSOP M20.173

ISL22343UFR20Z

(No longer available, recommended replacement: ISL22343WFR20Z-TK

22343 UFRZ

50

-40 to +125 20 Ld QFN

L20.5x5

ISL22343WFV20Z

22343 WFVZ

10

-40 to +125 20 Ld TSSOP M20.173

ISL22343WFR20Z

22343 WFRZ

10

-40 to +125 20 Ld QFN

L20.5x5

NOTES:

1. These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte

tin plate PLUS ANNEAL - e3 termination finish, which is 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 tape and reel. Please refer to TB347 for details on reel specifications

Data Sheet

August 17, 2015