X9428YS Xicor, X9428YS Datasheet

X9428YS

Manufacturer Part Number

X9428YS

Description

Manufacturer

Xicor

Datasheets

1.X9428YS.pdf (20 pages)

2.X9428YS.pdf (20 pages)

Specifications of X9428YS

Case

SOP16

Date_code

0241+

Current page: 1 of 20
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Low Noise/Low Power/2-Wire Bus

FEATURES

• Solid state potentiometer

• 2-wire serial interface

• Register oriented format

• Power supplies

• Low power CMOS

• High reliability

• 4-bytes of nonvolatile memory

• 10K Ohm resistor array

• Resolution: 64 taps each potentiometer

• SOIC and TSSOP packages

BLOCK DIAGRAM

REV 1.1.5 7/8/03

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

—Direct Read/Write/Transfer Wiper Position

—Store as many as Four Positions per

—V

—V+ = 2.7V to 5.5V

—V– = –2.7V to –5.5V

—Standby current < 1µA

—Ideal for Battery Operated Applications

—Endurance–100,000 Data Changes per Bit per

—Register Data Retention–100 years

Potentiometer

= 2.7V to 5.5V

A V A I L A B L E

PPLICATION

Single Digitally Controlled Potentiometer (XDCP

SCL

SDA

V+

V–

OTES

Interface

Circuitry

Control

and

Data

www.xicor.com

X9428

DESCRIPTION

The

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 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.

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.

R0 R1

R2 R3

X9428

Counter

(WCR)

Wiper

integrates

Characteristics subject to change without notice.

™

)

digitally

controlled

1 of 20

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