X9410WS24I

更新时间： 2024-01-05 07:58:32

品牌	Logo	应用领域
XICOR		电位器
页数	文件大小	规格书
21页	124K
描述
Dual Digitally Controlled Potentiometer

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X9410WS24I 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/SPI Bus

X9410

Dual Digitally Controlled Potentiometer (XDCP^™)

FEATURES

DESCRIPTION

• Two potentiometers in one package

• SPI serial interface

• Register oriented format

—Direct read/write/transfer wiper positions

—Store as many as four positions per

potentiometer

The X9410 integrates two digitally controlled

potentiometers (XDCP) on a monolithic CMOS

integrated microcircuit.

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 SPI 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.

• Power supplies

—V

= 2.7V to 5.5V

—V+ = 2.7V to 5.5V

—V– = –2.7V to –5.5V

• Low power CMOS

—Standby current < 1µA

• High reliability

—Endurance–100,000 data changes per bit per

—Register data retention–100 years

• 8-bytes of nonvolatile EEPROM memory

• 10KΩ resistor arrays

• Resolution: 64 taps each pot

• 24-lead TSSOP, 24-lead SOIC and 24-pin plastic

DIP 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+

V-

R0 R1

R2 R3

H0 H0

Wiper

Counter

(WCR)

L0 L0

HOLD

SCK

W0 W0

Interface

and

Control

Circuitry

W1 W1

Pot 1

Data

R0 R1

R2 R3

Wiper

Counter

(WCR)

H1 H1

Resistor

Array

Pot1

L1 L1

Characteristics subject to change without notice. 1 of 21

REV 1.1 10/6/00

www.xicor.com

12 3 4 5 6 7...21

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