Rainbow-electronics MAX5444 Manual de usuario descargar pdf

General Description

The MAX5441–MAX5444 are serial-input, voltage-out-

put, 16-bit digital-to-analog converters (DACs) in tiny

µMAX packages, 50% smaller than comparable DACs

in 8-pin SOs. They operate from low +3V (MAX5443/

MAX5444) or +5V (MAX5441/MAX5442) single sup-

plies. They provide 16-bit performance (±2LSB INL and

±1LSB DNL) over temperature without any adjustments.

Unbuffered DAC outputs result in a low supply current

of 120µA and a low offset error of 2LSB.

The DAC output ranges from 0 to V

REF

. For bipolar

operation, matched scaling resistors are provided in

the MAX5442/MAX5444 for use with an external preci-

sion op amp (such as the MAX400), generating a

±V

REF

output swing.

A 16-bit serial word is used to load data into the DAC

latch. The 25MHz, 3-wire serial interface is compatible

with SPI™/QSPI™/MICROWIRE™, and can interface

directly with optocouplers for applications requiring isola-

tion. A power-on reset circuit clears the DAC output to

code 0 (MAX5441/MAX5443) or code 32768 (MAX5442

/MAX5444) when power is initially applied.

A logic low on CLR asynchronously clears the DAC out-

put to code 0 (MAX5441/MAX5443) or code 32768

(MAX5442/MAX5444) independent of the serial interface.

The MAX5441/MAX5443 are available in 8-pin µMAX

packages. The MAX5442/MAX5444 are available in 10-

pin µMAX packages.

Applications

High-Resolution Offset and Gain Adjustment

Industrial Process Control

Automated Test Equipment

Data-Acquisition Systems

Features

♦ Ultra-Small 3mm x 5mm 8-Pin µMAX Package

♦ Low 120µA Supply Current

♦ Fast 1µs Settling Time

♦ 25MHz SPI/QSPI/MICROWIRE-Compatible Serial

Interface

♦ V

REF

Range Extends to V

♦ +5V (MAX5441/MAX5442) or +3V

(MAX5443/MAX5444) Single-Supply Operation

♦ Full 16-Bit Performance Without Adjustments

♦ Unbuffered Voltage Output Directly Drives

60kΩ Loads

♦ Power-On Reset Circuit Clears DAC Output to

Code 0 (MAX5441/MAX5443) or Code 32768

(MAX5442/MAX5444)

♦ Schmitt-Trigger Inputs for Direct Optocoupler

Interface

♦ Asynchronous CLR

MAX5441–MAX5444

+3V/+5V, Serial-Input,

Voltage-Output, 16-Bit DACs

________________________________________________________________ Maxim Integrated Products 1

GND

RFB

INV

DIN

SCLK

REF

TOP VIEW

MAX5442

MAX5444

OUT

CLR

µMAX-8

OUT

SCLK

DIN

REF

MAX5441

MAX5443

µMAX-10

GND

CLR

Pin Configurations

19-1846; Rev 1; 6/01

Ordering Information

SPI and QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

PART TEMP RANGE PIN-PACKAGE INL (LSB) SUPPLY (V)

MAX5441ACUA 0°C to +70°C 8 µMAX ±2 5

MAX5441AEUA -40°C to +85°C 8 µMAX ±25

MAX5441BCUA 0°C to +70°C 8 µMAX ±45

MAX5441BEUA -40°C to +85°C 8 µMAX ±4 5

MAX5442ACUB 0°C to +70°C 10 µMAX ±25

MAX5442AEUB -40°C to +85°C 10 µMAX ±2 5

MAX5442BCUB 0°C to +70°C 10 µMAX ±45

MAX5442BEUB -40°C to +85°C 10 µMAX ±4 5

Functional Diagrams appear at end of data sheet.

Ordering Information continued at end of data sheet.

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.

1 2 3 4 5 6 ... 11 12

Indice de contenidos

Pagina 1 - Voltage-Output, 16-Bit DACs

General DescriptionThe MAX5441–MAX5444 are serial-input, voltage-out-put, 16-bit digital-to-analog converters (DACs) in tinyµMAX packages, 50% smaller

Pagina 2

MAX5441–MAX5444+3V/+5V, Serial-Input,Voltage-Output, 16-Bit DACs10 ___________________________________________________________________________________

Pagina 3