1

FN6679.3

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

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ISL22512

Single Push Button Controlled Potentiometer (XDCP™)

Low Noise, Low Power, 16 Taps, Push

Button Controlled Potentiometer

The Intersil ISL22512 is a three-terminal digitally-controlled

potentiometer (XDCP) implemented by a resistor array

composed of 15 resistive elements and a wiper switching

network. The ISL22512 features a push button control, a

shutdown mode, as well as an industry-leading µTQFN

package.

The push button control has individual PU and PD inputs for

adjusting the wiper. To eliminate redundancy, the wiper

position will automatically increment or decrement if one of

these inputs is held longer than one second.

Forcing both PU and PD low for more than two seconds

activates shutdown mode. Shutdown mode disconnects the

top of the resistor chain and moves the wiper to the lowest

position, minimizing power consumption.

The three terminals accessing the resistor chain naturally

configure the ISL22512 as a voltage divider. A rheostat is

easily formed by floating an end terminal or connecting it to

the wiper.

Features

• Solid-State Non-Volatile Potentiometer

• Push Button Controlled

• Single or Auto Increment/Decrement

- Fast Mode after 1s Button Press

• AUTOSTORE of Last Wiper Position or Manual Store of

Wiper Position

• Shutdown Mode

• 16 Wiper Tap Points

- Middle Scale Wiper Position on Power-Up

• Low Power CMOS

- Standby Current, 3µA max

• High Reliability

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

- Register data retention: 50 years @ T

 +55°C

• Packages

- 8 Ld SOIC

- 10 Ld µTQFN (2.1mmx1.6mm)

• Pb-Free (RoHS Compliant)

Applications

• Volume Control

• LED/LCD Brightness Control

• Contrast Control

• Programming Bias Voltages

• Ladder Networks

CONTROL

BLOCK

PU

PD

RH

RL

RW

9

8

7

6

1

2

3

4

NC

ASE

RL

PU

RH

PD

O

RW

NC

ASE

PU

PD

RH

1

2

3

4

8

7

6

5

RL

RW

O

µTQFN

(Top View)

SOIC

(Top View)

ASE

Data Sheet

October 12, 2015