DS4426T+TR

更新时间： 2024-11-26 06:54:43

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
15页	242K
描述
Quad-Channel, I2C-Margining IDACs with Three Channels of Power-Supply Tracking

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数据手册

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DS4426T+TR 数据手册

19-4541; Rev 1; 7/09

Quad-Channel, I C-Margining IDACs with

Three Channels of Power-Supply Tracking

DS426

General Description

Features

The DS4426 contains four I C-adjustable current DACs

♦ Four Current DACs

capable of sinking or sourcing current. External resis-

tors set the full-scale range of each output. Each DAC

output has 127 sink and 127 source steps that are pro-

50µA to 200µA Adjustable Full-Scale Range

127 Settings Each for Sink and Source

♦ Power-Supply Tracking

grammed by the I C interface. Power-supply tracking

functionality is provided for three channels using dedi-

cated control inputs. Once power-supply tracking is

accomplished, the current outputs default to zero. Two

address pins allow up to four DS4426 devices to exist

Power-Supply Sequencing

Ramp-Up and Ramp-Down Tracking Control

Ratiometric Tracking Support

♦ +2.7V to +5.5V Operation

on the same I C bus.

♦ I C-Compatible Serial Interface

Applications

♦ Two Address Input Pins Allow Up to Four Devices

Power-Supply Adjustment

Power-Supply Margining

Power-Supply Tracking

on Same I C Bus

♦ Lead-Free, 28-Pin TQFN Package (4mm x 4mm)

with Exposed Pad

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

Adjustable Current Sink or Source

Ordering Information

Pin Configuration

PART

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

28 TQFN-EP*

TOP VIEW

DS4426T+

DS4426T+T&R

21 20 19 18 17 16 15

+Denotes a lead(Pb)-free/RoHS-compliant package.

T&R = Tape and reel.

*EP = Exposed pad.

FS1 22

FS2 23

INN2

INP2

12 INN1

FS3

GAIN3

GAIN2

GAIN1

N.C.

INP1

DS4426

*EP

Functional Diagram appears at end of data sheet.

GND

THIN QFN

(4mm × 4mm)

*EXPOSED PAD.

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...15

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