max549acuat Maxim Integrated Products, Inc., max549acuat Datasheet

max549acuat

Manufacturer Part Number

max549acuat

Description

+2.5v To +5.5v, Low-power, Single/dual, 8-bit Voltage-output Dacs In ?max Package

Manufacturer

Maxim Integrated Products, Inc.

Datasheet

1.MAX549ACUAT.pdf (16 pages)

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The MAX548A/MAX549A/MAX550A serial, 8-bit voltage-

output digital-to-analog converters (DACs) operate from

a single +2.5V to +5.5V supply. Their ±1LSB TUE spec-

ification is guaranteed over temperature. Operating cur-

rent (supply current plus reference current) is typically

75µA per DAC with V

is disconnected from the reference, reducing current

drain to less than 1µA. The MAX548A/MAX549A allow

each DAC to be shut down independently.

The 10MHz, 3-wire serial interface is compatible with

SPI™/QSPI™ and Microwire™ interface standards.

Double-buffered inputs provide flexibility when updat-

ing the DACs; the input and DAC registers can be

updated individually or simultaneously.

The MAX548A is a dual DAC with an asynchronous

load input; it uses V

MAX549A is a dual DAC with an external reference

input. The MAX550A is a single DAC with an external

reference input and an asynchronous load input.

The MAX548A/MAX549A/MAX550A’s low power con-

sumption and small µMAX and DIP packages make

these devices ideal for portable and battery-powered

applications.

________________________Applications

19-1206; Rev 0; 3/97

SPI and QSPI are trademarks of Motorola Inc.

Microwire is a trademark of National Semiconductor Corp.

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800

_____________________Selector Guide

_______________General Description

Number of DACs

DAC Reference

Asynchronous

Load DAC Input

µMAX Package

FEATURE

8-Bit Voltage-Output DACs in µMAX Package

Battery-Powered Systems

VCXO Control

Comparator-Level Settings

GaAs Amp Bias Control

Digital Gain and Offset Control

________________________________________________________________ Maxim Integrated Products

+2.5V to +5.5V, Low-Power, Single/Dual,

MAX548A

√

= 2.5V. In shutdown, the DAC

as the reference input. The

MAX549A

External

—

√

MAX550A

External

√

Ordering Information continued at end of data sheet.

* Dice are specified at T

† Contact factory for availability of 8-pin SO package.

____________________________Features

_________________Pin Configurations

______________Ordering Information

MAX548ACPA

MAX548ACUA

MAX548AC/D

MAX548AEPA

MAX548AEUA

+2.5V to +5.5V Single-Supply Operation

±1LSB (max) TUE

Power-On Reset Clears All Registers to Zero

Low Operating Current:

1µA Shutdown Mode

10MHz, 3-Wire Serial Interface Compatible with

SPI/QSPI and Microwire

µMAX Package—50% Smaller than 8-Pin SO

Independent Shutdown of DACs

(MAX548A/MAX549A)

Pin Configurations continued at end of data sheet.

TOP VIEW

150µA (MAX548A/MAX549A, V

75µA (MAX550A, V

PART

OUTA

GND

DIN

-40°C to +85°C

TEMP. RANGE

= +25°C, DC parameters only.

0°C to +70°C

DIP/ MAX

REF

MAX548A

= +2.5V)

REF

8 Plastic DIP

8 µMAX

Dice*

8 Plastic DIP

8 µMAX

PIN-PACKAGE †

OUTB

LDAC

SCLK

= +2.5V)

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