X9268US24I-2.7T1 datasheet, PDF

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X9268US24I-2.7T1: DescriptionIC xdcp dual 256tap 50k 24-soic; Categorysemiconductor Analog mixed-signal IC; File Size321KB，22 Pages; ManufacturerIntersil ( Renesas ); Websitehttp://www.intersil.com/cda/home/

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X9268US24I-2.7T1 Overview

IC xdcp dual 256tap 50k 24-soic

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X9268

Dual Supply/Low Power/256-Tap/2-Wire Bus

Data Sheet

August 29, 2006

FN8172.4

Dual Digitally-Controlled (XDCP™)

Potentiometers

FEATURES

• Dual–Two Separate Potentiometers

• 256 Resistor Taps/Pot–0.4% Resolution

• 2-Wire Serial Interface for Write, Read, and

Transfer Operations of the Potentiometer

•

Wiper Resistance, 100Ω typical @ V+ = 5V,

V- = -5V

• 16 Nonvolatile Data Registers for Each

Potentiometer

• Nonvolatile Storage of Multiple Wiper Positions

• Power-on Recall. Loads Saved Wiper Position

on Power-up.

• Standby Current <5µA Max

• V

: ±2.7V to ±5.5V Operation

• 50kΩ, 100kΩ Versions of End to End Pot

Resistance

• Endurance: 100,000 Data Changes per Bit per

• 100 yr. Data Retention

• 24 Ld SOIC

• Low Power CMOS

• Power Supply V

= ±2.7V to ±5.5V

V+ = 2.7V to 5.5V

V- = -2.7V to -5.5V

• Pb-Free Plus Anneal Available (RoHS Compliant)

FUNCTIONAL DIAGRAM

DESCRIPTION

The X9268 integrates 2 digitally controlled

potentiometer (XDCP) on a monolithic CMOS

integrated circuit.

The digital controlled potentiometer is implemented

using 255 resistive elements in a series array.

Between each element are tap points connected to the

wiper terminal through switches. The position of the

wiper on the array is controlled by the user through the

2-Wire bus interface. Each potentiometer has

associated with it a volatile Wiper Counter Register

(WCR) and a four nonvolatile Data Registers that can

be directly written to and read by the user. The

contents of the WCR controls the position of the wiper

on the resistor array though the switches. Powerup

recalls the contents of the default Data Register (DR0)

to the WCR.

The XDCP can be used as a three-terminal

potentiometer or as a two terminal variable resistor in

a wide variety of applications including control,

parameter adjustments, and signal processing.

2-Wire

Bus

Interface

Address

Data

Status

Bus

Interface

and Control

Write

Read

Transfer

Inc/Dec

Power-on Recall

Wiper Counter

Registers (WCR)

Control

Data Registers

(DR0–DR3)

V-

50kΩ or 100kΩ versions

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

1-888-INTERSIL or 1-888-468-3774

Intersil (and design) is a registered trademark of Intersil Americas Inc.

All other trademarks mentioned are the property of their respective owners.

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