_______________General Description

The MAX5154/MAX5155 low-power, serial, voltage-out-

put, dual 12-bit digital-to-analog converters (DACs)

consume only 500µA from a single +5V (MAX5154) or

+3V (MAX5155) supply. These devices feature Rail-to-

16-pin QSOP package. To maximize the dynamic

range, the DAC output amplifiers are configured with an

internal gain of +2V/V.

The 3-wire serial interface is SPI™/QSPI™ and

Microwire™ compatible. Each DAC has a double-

buffered input organized as an input register followed

by a DAC register, which allows the input and DAC reg-

isters to be updated independently or simultaneously

with a 16-bit serial word. Additional features include

programmable shutdown (2µA), hardware-shutdown

lockout (PDL), a separate reference voltage input for

each DAC that accepts AC and DC signals, and an

active-low clear input (CL) that resets all registers and

DACs to zero. These devices provide a programmable

logic pin for added functionality, and a serial-data out-

put pin for daisy chaining.

________________________Applications

Industrial Process Control

Remote Industrial Controls

Digital Offset and Gain

Microprocessor-

Adjustment

Controlled Systems

Motion Control

Automatic Test

Equipment (ATE)

____________________________Features

o 12-Bit Dual DAC with Internal Gain of +2V/V

o Rail-to-Rail Output Swing

o 12µs Settling Time

o Single-Supply Operation: +5V (MAX5154)

+3V (MAX5155)

o Low Quiescent Current: 500µA (normal operation)

2µA (shutdown mode)

o SPI/QSPI and Microwire Compatible

o Available in Space-Saving 16-Pin QSOP Package

o Power-On Reset Clears Registers and DACs

to Zero

o Adjustable Output Offset

Low-Power, Dual, 12-Bit Voltage-Output DACs

with Serial Interface

________________________________________________________________

Maxim Integrated Products

1

19-1316; Rev 1; 12/97

______________Ordering Information

Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.

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

For small orders, phone 408-737-7600 ext. 3468.

REFA

AGND

DGND

PDL

CL

DOUT

16-BIT

SHIFT

REGISTER

SR

CONTROL

INPUT

REG A

INPUT

REG B

SCLK

UPO

REFB

DIN

CS

DAC B

DAC A

DAC

REG A

LOGIC

OUTPUT

DECODE

CONTROL

DAC

REG B

MAX5154

MAX5155

OUTB

R

R

R

R

OSB

OUTA

OSA

_________________________________________________________Functional Diagram

Ordering Information continued at end of data sheet.

Pin Configuration appears at end of data sheet.

INL

(LSB)

PIN-PACKAGE

TEMP. RANGE

PART

±1/2

±1

±1/2

16 QSOP

16 Plastic DIP

16 Plastic DIP

0°C to +70°C

0°C to +70°C

0°C to +70°C

MAX5154ACEE

MAX5154BCPE

MAX5154ACPE

±1

16 QSOP

0°C to +70°C

MAX5154BCEE