Datasheet > DS3905

DS3905

更新时间： 2024-11-21 22:40:39

品牌	Logo	应用领域
达拉斯 - DALLAS		开关
页数	文件大小	规格书
11页	254K
描述
Triple 128-Position Nonvolatile Digital Variable Resistor/Switch

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DS3905 数据手册

Rev 1; 8/03

Triple 128-Position Nonvolatile Digital

Variable Resistor/Switch

General Description

Features

♦ Three 20kΩ, 128-Position Linear Digital Resistors

♦ Resistor Settings are Stored in NV Memory

The DS3904/DS3905 contain three nonvolatile (NV) low

temperature coefficient, variable digital resistors. Each

resistor has 128 user-selectable positions. Additionally,

the DS3904/DS3905 have a high-impedance setting that

allows each resistor to function as a digital switch. The

DS3904/DS3905 can operate over a 2.7V to 5.5V supply

voltage range, and communication with the device is

achieved through a 2-wire serial interface. Address pins

allow multiple DS3904/DS3905s to operate on the same

two-wire bus. The DS3904 has one address pin, allow-

ing two DS3904s to share the bus, while the DS3905

has three address pins, allowing up to eight DS3905s to

share a common bus. The low-cost and small size of the

DS3904/DS3905 make them ideal replacements for con-

ventional mechanical trimming resistors.

♦ Each Resistor has a High-Impedance Setting for

Switch Operation to Control Digital Logic

♦ Low Temperature Coefficient

♦ 2-Wire Serial Interface

♦ 2.7V to 5.5V Operating Range

♦ -40°C to +85°C Industrial Temperature

♦ Packaging: 8-Pin µSOP for DS3904, 10-pin µSOP

for DS3905

Ordering Information

PIN-

PACKAGE

PART

TEMP RANGE

RESISTANCE

8 µSOP

20kΩ + Hi-Z

DS3904U-020 -40°C to +85°C

DS3905U-020 -40°C to +85°C

Applications

10 µSOP

Power-Supply Calibration

Cell Phones and PDAs

Pin Configurations

Fibre Optic Transceiver Modules

Portable Electronics

TOP VEIW

10 A2

Small and Low-Cost Replacement for

Conventional Mechanical Trimming Resistors/

Dip Switches

SDA

SCL

SDA

SDL

DS3904

DS3905

Test Equipment

GND

µSOP

Typical Operating Circuit

INTERFACE EXAMPLES

DS3904/DS3905

VARIABLE RESISTANCE

FOR ADJUSTABLE

CURRENT SOURCE

0.1µF

RHIZ

RESISTOR 0

20kΩ

ADDR F8h

4.7kΩ 4.7kΩ

SCL

SDA

2-WIRE

MASTER

DIGITAL

LOGIC

2-WIRE

ADDRESSABLE

SWITCH (USING 00h

AND RHIZ SETTINGS)

RESISTOR 1

20kΩ

ADDR F9h

(DS3905 ONLY)

RHIZ

GAIN

CONTROL

RESISTOR 2

20kΩ

ADDR FAh

GND

_____________________________________________ 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.

12 3 4 5 6 7...11

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与DS3905相关器件

型号	品牌	获取价格	描述	数据表
DS3905U-020	MAXIM	获取价格	Triple 128-Position Nonvolatile Digital
DS3905U-020	DALLAS	获取价格	Triple 128-Position Nonvolatile Digital Variable Resistor/Switch
DS3905U-020/T	MAXIM	获取价格	Digital Potentiometer, 3 Func, 20000ohm, 2-wire Serial Control Interface, 128 Positions, P
DS3905U-020+	MAXIM	获取价格	暂无描述
DS3906	MAXIM	获取价格	Triple NV Low Step Size Variable Resistor Plus Memory
DS3906	ADI	获取价格	三路、非易失、小步长调节可变电阻与存储器
DS3906U	ROCHESTER	获取价格	TRIPLE 10K DIGITAL POTENTIOMETER, 3-WIRE SERIAL CONTROL INTERFACE, PDSO10, MICRO, SOP-10
DS3906U	MAXIM	获取价格	Triple NV Low Step Size Variable Resistor Plus Memory
DS3906U/T&R	MAXIM	获取价格	暂无描述
DS3906U+	MAXIM	获取价格	Digital Potentiometer, 3 Func, 10000ohm, 3-wire Serial Control Interface, PDSO10, LEAD FRE

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