X9259_07 INTERSIL [Intersil Corporation], X9259_07 Datasheet

X9259_07

Manufacturer Part Number

X9259_07

Description

Quad Digitally-Controlled Potentiometers

Manufacturer

INTERSIL [Intersil Corporation]

Datasheet

1.X9259_07.pdf (21 pages)

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Quad Digitally-Controlled (XDCP™)

Potentiometers

The X9259 integrates four digitally controlled potentiometers

(XDCP) 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

2-wire bus interface. Each potentiometer has associated

with it a volatile Wiper Counter Register (WCR) and four

non-volatile Data Registers that can be directly written to and

read by the user. The content of the WCR controls the

position of the wiper. At power-up, the device recalls the

content of the default Data Registers of each DCP (DR00,

DR10, DR20, and DR30) to the corresponding 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.

Functional Diagram

SDA

SCL

Interface

2-Wire

INTERFACE

POWER UP,

CONTROL

STATUS

AND

Data Sheet

WCR0

DR00

DR01

DR02

DR03

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

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

DCP0

Single Supply/Low Power/256-Tap/2-Wire bus

Features

• Four Separate Potentiometers in One Package

• 256 Resistor Taps–0.4% Resolution

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

• Wiper Resistance: 100Ω typical @ V

• 4 Non-volatile Data Registers for Each Potentiometer

• Non-volatile Storage of Multiple Wiper Positions

• Standby Current <5µA Max

• V

• 50kΩ, 100kΩ versions of Total Resistance

• Endurance: 100,000 Data Changes per Bit per Register

• 100 year Data Retention

• Single Supply Version of X9258

• 24 Ld SOIC, 24 Ld TSSOP

• Low Power CMOS

• Pb-Free Plus Anneal Available (RoHS Compliant)

WCR1

DR10

DR11

DR12

DR13

Transfer Operations of the Potentiometer

: 2.7V to 5.5V Operation

DCP1

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

April 13, 2007

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

WCR2

DR20

DR21

DR22

DR23

DCP2

WCR3

DR30

DR31

DR32

DR33

= 5V

DCP3

X9259

FN8169.5

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