Datasheet > DS3903

DS3903

更新时间： 2024-11-09 04:15:15

品牌	Logo	应用领域
美信 - MAXIM		电位器
页数	文件大小	规格书
11页	619K
描述
Triple 128-Position Nonvolatile Digital Potentiometer

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数据手册

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DS3903 数据手册

Rev 0; 6/02

Triple 128-Position Nonvolatile

Digital Potentiometer

General Description

Features

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.

♦ 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

Applications

Power-Supply Calibration

Mobile Phones and PDAs

Fiber Optics Transceiver Modules

Portable Electronics

♦ Supply Voltage: 3V or 5V

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

♦ Packaging: 20-Pin TSSOP

A Small, Low-Cost Replacement for Mechanical

Potentiometers

Ordering Information

PART

TEMP RANGE PIN-PACKAGE

DS3903E-020

-40°C to +85°C 20 TSSOP

20 TSSOP

(Tape-and-Reel)

DS3903E-020/T&R -40°C to +85°C

Pin Configuration

Typical Operating Circuit

SDA

20 V

SCL

5.1kΩ

19 N.C.

18 N.C.

17 N.C.

16 N.C.

15 H0

DS3903

0.1µF

N.C.

Iref

VARIABLE RESISTANCE

FOR ADJUSTABLE

POTENTIOMETER 2

10kΩ

ADDDR FAh

4.7kΩ 4.7kΩ

CURRENT SOURCE

SCL

SDA

DS3903

2-WIRE

MASTER

POTENTIOMETER 0

10kΩ

ADDDR F9h

VREF1

HIGH-OUTPUT-IMPEDANCE

VOLTAGE REFERENCE

14 W0

13 H1

POTENTIOMETER 1

90kΩ

ADDDR F8h

GND 10

11 H2

VREF2

GND

BUFFERED

VOLTAGE

REFERENCE

TSSOP

MAX427

_____________________________________________ Maxim Integrated Products

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.

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与DS3903相关器件

型号	品牌	获取价格	描述	数据表
DS3903E-020	MAXIM	获取价格	Triple 128-Position Nonvolatile Digital Potentiometer
DS3903E-020	DALLAS	获取价格	Digital Potentiometer, PDSO20,
DS3903E-020/R	MAXIM	获取价格	Triple 128-Position Nonvolatile Digital Potentiometer
DS3903E-020/T	MAXIM	获取价格	Triple 128-Position Nonvolatile Digital Potentiometer
DS3903E-020/T&R	MAXIM	获取价格	Digital Potentiometer, 3 Func, 90000ohm, 2-wire Serial Control Interface, 128 Positions, P
DS3903E-020/TR	DALLAS	获取价格	Digital Potentiometer, PDSO20,
DS3903E-020/W	MAXIM	获取价格	Digital Potentiometer, 3 Func, 90000ohm, 2-wire Serial Control Interface, 128 Positions, P
DS3903E-020+	MAXIM	获取价格	Digital Potentiometer, 3 Func, 90000ohm, 2-wire Serial Control Interface, 128 Positions, P
DS3903E-020+T&R	MAXIM	获取价格	暂无描述
DS3904	DALLAS	获取价格	Triple 128-Position Nonvolatile Digital Variable Resistor/Switch