Datasheet > X9409WS24I-2.7T1

X9409WS24I-2.7T1

更新时间： 2024-02-12 03:46:30

品牌	Logo	应用领域
XICOR		光电二极管
页数	文件大小	规格书
21页	149K
描述
Digital Potentiometer, 4 Func, 10000ohm, 2-wire Serial Control Interface, 64 Positions, CMOS, PDSO24, PLASTIC, SOIC-24

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X9409WS24I-2.7T1 数据手册

APPLICATION NOTES

A V A I L A B L E

AN99 • AN115 • AN120 • AN124 • AN133 • AN134 • AN135

Low Noise/Low Power/2-Wire Bus

Preliminary Information

X9409

Quad Digitally Controlled Potentiometers (XDCP^™)

FEATURES

DESCRIPTION

• Four potentiometers per package

• 64 resistor taps

The X9409 integrates

potentiometers (XDCP) on a monolithic CMOS

integrated microcircuit.

digitally controlled

• 2-wire serial interface for write, read, and trans-

fer operations of the potentiometer

• 50Ω Wiper resistance, typical at 5V.

• Four non-volatile data registers for each

potentiometer

• Non-volatile storage of multiple wiper position

• Power on recall. Loads saved wiper position on

power up.

The digitally controlled potentiometer is implemented

using 63 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 4

nonvolatile Data Registers (DR0:DR3) 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 through the switches. Power up recalls

the contents of DR0 to the WCR.

• Standby current < 1µA typical

• System V : 2.7V to 5.5V operation

• 10KΩ, 2.5KΩ End to end resistance

• 100 yr. data retention

• Endurance: 100,000 data changes per bit per

• Low power CMOS

• 24-lead SOIC, 24-lead TSSOP, and

24-lead CSP (Chip Scale Package) Packages

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.

BLOCK DIAGRAM

Pot 0

V /R

H0 HO

Wiper

Counter

(WCR)

Wiper

Counter

(WCR)

H2 H2

Resistor

Array

Pot 2

L2 L2

SCL

SDA

W2 W2

Interface

and

Control

Circuitry

Data

W3 W3

Wiper

Counter

(WCR)

Wiper

Counter

(WCR)

H3 H3

Resistor

Array

Pot 1

Resistor

Array

Pot 3

L1 L1

L3 L3

Characteristics subject to change without notice. 1 of 21

REV 1.8 4/13/04

www.xicor.com

12 3 4 5 6 7...21

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