__________________General Description

The MAX5253 combines four low-power, voltage-output,

12-bit digital-to-analog converters (DACs) and four pre-

cision output amplifiers in a space-saving, 20-pin pack-

age. In addition to the four voltage outputs, each

amplifier’s negative input is also available to the user.

This facilitates specific gain configurations, remote

sensing, and high output drive capacity, making the

MAX5253 ideal for industrial-process-control applica-

tions. Other features include software shutdown, hard-

ware shutdown lockout, an active-low reset which clears

all registers and DACs to zero, a user-programmable

logic output, and a serial-data output.

Each DAC has a double-buffered input organized as an

input register followed by a DAC register. A 16-bit serial

word loads data into each input/DAC register. The serial

interface is compatible with SPI™/QSPI™ and

Microwire™. It allows the input and DAC registers to be

updated independently or simultaneously with a single

software command. The DAC registers can be simulta-

neously updated via the 3-wire serial interface. All logic

inputs are TTL/CMOS-logic compatible.

________________________Applications

Industrial Process Controls

Automatic Test Equipment

Digital Offset and Gain Adjustment

Motion Control

Remote Industrial Controls

Microprocessor-Controlled Systems

______________________________Features

o Four 12-Bit DACs with Configurable

Output Amplifiers

o +3.0V to +3.6V Single-Supply Operation

o Low Supply Current: 0.82mA Normal Operation

3µA Shutdown Mode

o Reference Inputs are High Impedance in Shutdown

o Available in 20-Pin SSOP

o Power-On Reset Clears all Registers and

DACs to Zero

o SPI/QSPI and Microwire Compatible

o Simultaneous or Independent Control of DACs

via 3-Wire Serial Interface

o User-Programmable Digital Output

+3V, Quad, 12-Bit Voltage-Output DAC

with Serial Interface

________________________________________________________________

Maxim Integrated Products

1

MAX5253

OUTA

FBA

FBB

FBC

FBD

DAC A

DAC B

DAC C

DAC D

REFAB

DAC A

REGISTER A

DECODE

CONTROL

INPUT

REGISTER A

DAC B

REGISTER B

INPUT

REGISTER B

DAC C

REGISTER C

INPUT

REGISTER C

DAC D

REGISTER D

INPUT

REGISTER D

16-BIT

SHIFT

REGISTER

SR

CONTROL

LOGIC

OUTPUT

CS DIN SCLK

OUTB

OUTC

OUTD

DOUT

PDL

CL

AGND

DGND

UPO

REFCD

_________________________________________________________________________Functional Diagram

19-1123; Rev 0; 9/96

PART

MAX5253ACPP

MAX5253BCPP

0°C to +70°C

0°C to +70°C

TEMP. RANGE

PIN-PACKAGE

20 Plastic DIP

20 Plastic DIP

_________________Ordering Information

Ordering Information continued on last page.

Pin Configuration appears at end of data sheet.

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

INL

(LSB)

±1/2

±1

SPI and QSPI are trademarks of Motorola, Inc. Microwire is a trademark of National Semiconductor Corp.

MAX5253ACAP

MAX5253BCAP

0°C to +70°C

0°C to +70°C

20 SSOP

20 SSOP

±1/2

±1