Rainbow-electronics DS3903 Bedienungsanleitung PDF herunterladen

General Description

The DS3903 contains three nonvolatile (NV) low tem-

perature coefficient digital potentiometers, which can

be accessed through a 2-wire bus. It operates in both

3V and 5V systems, and it features a write-protect pin

that can lock the positions of the potentiometers. An

address pin allows two DS3903s to be placed on the

same 2-wire bus.

Applications

Power-Supply Calibration

Mobile Phones and PDAs

Fiber Optics Transceiver Modules

Portable Electronics

A Small, Low-Cost Replacement for Mechanical

Potentiometers

Features

♦ Three 128-Position Linear Potentiometers

(Two 10kΩ, One 90kΩ)

♦ NV Wiper Storage

♦ 0 to 5.5V on Any Potentiometer Terminal

Independent of V

♦ Low End-to-End Temperature Coefficient

♦ Operates on an Industry-Standard 2-Wire Bus

♦ Write-Protect Pin

♦ Supply Voltage: 3V or 5V

♦ Operating Temperature Range: -40°C to +85°C

♦ Packaging: 20-Pin TSSOP

DS3903

Triple 128-Position Nonvolatile

Digital Potentiometer

_____________________________________________ Maxim Integrated Products 1

SDA

192

SCL

N.C.

TSSOP

N.C.

GND

DS3903

Pin Configuration

0.1µF

4.7kΩ

2-WIRE

MASTER

VREF1

VREF2

5.1kΩ

Iref

SCL

SDA

POTENTIOMETER 2

10kΩ

ADDDR FAh

POTENTIOMETER 0

10kΩ

ADDDR F9h

POTENTIOMETER 1

90kΩ

ADDDR F8h

GND

4.7kΩ

VARIABLE RESISTANCE

FOR ADJUSTABLE

CURRENT SOURCE

HIGH-OUTPUT-IMPEDANCE

VOLTAGE REFERENCE

BUFFERED

VOLTAGE

REFERENCE

MAX427

DS3903

Typical Operating Circuit

Ordering Information

Rev 0; 6/02

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

PART

TEMP RANGE

PIN-PACKAGE

DS3903E-020

-40°C to +85°C

20 TSSOP

DS3903E-020/T&R

-40°C to +85°C

20 TSSOP

(Tape-and-Reel)

1 2 3 4 5 6 ... 10 11

Digital Potentiometer 1

Inhaltsverzeichnis

Seite 1 - Digital Potentiometer

General DescriptionThe DS3903 contains three nonvolatile (NV) low tem-perature coefficient digital potentiometers, which canbe accessed through a 2-wi

Seite 2

DS3903Triple 128-Position NonvolatileDigital Potentiometer10 _____________________________________________________________________The following bus pr

Seite 3

DS3903Triple 128-Position NonvolatileDigital PotentiometerMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely em

Seite 4

DS3903Triple 128-Position NonvolatileDigital Potentiometer2 ______________________________________________________________________ABSOLUTE MAXIMUM RAT

Seite 5

DS3903Triple 128-Position NonvolatileDigital Potentiometer_____________________________________________________________________ 3AC ELECTRICAL CHARACT

Seite 6

DS3903Triple 128-Position NonvolatileDigital Potentiometer4 ______________________________________________________________________Note 1: All voltages

Seite 7

DS3903Triple 128-Position NonvolatileDigital Potentiometer_____________________________________________________________________ 5END-TO-END RESISTANCE

Seite 8

DS3903Triple 128-Position NonvolatileDigital Potentiometer6 ______________________________________________________________________Typical Operating Ch

Seite 9

Detailed DescriptionThe DS3903 contains three NV, low-temperature coeffi-cient digital potentiometers. It is accessible through a2-wire bus, and it se

Seite 10

DS3903Triple 128-Position NonvolatileDigital Potentiometer8 ______________________________________________________________________word consists of 101

Seite 11

DS3903Triple 128-Position NonvolatileDigital Potentiometer_____________________________________________________________________ 9write process twto th

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Rainbow-electronics DS3903 Bedienungsanleitung

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Inhaltsverzeichnis

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