X9C303S8IZ-2.7 参数 Datasheet PDF下载

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X9C303

Logarithmic Digitally Controlled Potentiometer (XDCP™)

Data Sheet

January 24, 2007

FN8223.1

Terminal Voltage ±5V, 100 Taps, Log Taper

Description

The Intersil X9C303 is a digitally controlled potentiometer

(XDCP). The device consists of a resistor array, wiper

switches, a control section, and nonvolatile memory. The

wiper position is controlled by a three-wire interface.

The resistor array is composed of 99 resistive elements.

Between each element and at either end are tap points

accessible to the wiper terminal. The position of the wiper

element is controlled by the CS, U/D, and INC inputs. The

position of the wiper can be stored in nonvolatile memory

and then be recalled upon a subsequent power-up

operation.

The device can be used as a three-terminal potentio-meter

or as a two-terminal variable resistor in a wide variety of

applications ranging from control, to signal processing, to

parameter adjustment. Digitally-controlled potentiometers

provide three powerful application advantages; (1) the

variability and reliability of a solid-state potentiometer, (2) the

flexibility of computer-based digital controls, and (3) the use

of nonvolatile memory for potentiometer settings retention.

Features

• Solid-state potentiometer

• Three-wire serial interface

• 100 wiper tap points

- Wiper position stored in nonvolatile memory and

recalled on power-up

• 99 resistive elements, log taper

- Temperature compensated

- End to end resistance, 32kΩ ±15%

- Terminal voltages, ±5V

• Low power CMOS

- V

CC

= 5V

- Active current, 3mA max.

- Standby current, 750µA max.

• High reliability

- Endurance, 100,000 data changes per bit

- Register data retention, 100 years

• Packages

- 8 Ld TSSOP

- 8 Ld SOIC

- 8 Ld PDIP

Block Diagram

U/D

INC

CS

7-Bit

Up/Down

Counter

99

98

97

7-Bit

Nonvolatile

Memory

96

One

of

One-

Hundred

Decoder

2

Store and

Recall

Control

Circuitry

1

0

R

L/

V

L

R

W/

V

W

R

H/

V

H

Transfer

Gates

Resistor

Array

V

CC

V

SS

1

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

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

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

XDCP is a trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005, 2007. All Rights Reserved

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