General Description

The MAX5232/MAX5233 low-power, dual 10-bit voltage-

output digital-to-analog converters (DACs) feature an

internal 10ppm/°C precision bandgap voltage reference

and precision output amplifiers. The MAX5233 operates

on a single 5V supply with an internal 2.465V reference

and features a 4.092V full-scale output range. The

MAX5232 operates on a single 3V supply with an internal

1.234V reference and features a 2.046V full-scale output

range. The MAX5233 consumes only 470µA while the

MAX5232 consumes only 420µA of supply current. Both

devices feature low-power (2µA) software- and hard-

ware-enabled shutdown modes.

The MAX5232/MAX5233 feature a 13.5MHz SPI™-,

QSPI™-, and MICROWIRE™-compatible 3-wire serial

interface. An additional data output (DOUT) allows for

daisy-chaining and read back. Each DAC has a double-

buffered digital input. The MAX5232/MAX5233 feature

two software-selectable shutdown output impedances:

1k

Ω or 200kΩ. A power-up reset feature sets DAC out-

puts at ground or at the midscale DAC code.

The MAX5232/MAX5233 are specified over the extended

temperature range (-40°C to +85°C) and are available in

16-pin QSOP packages.

Applications

Industrial Process Controls

Automatic Test Equipment

Digital Offset and Gain Adjustment

Motion Control

µP-Controlled Systems

Features

o Internal 10ppm/°C Precision Bandgap Reference

2.465V (MAX5233)

1.234V (MAX5232)

o 30ppm/°C (max) Full-Scale Output Range

4.092V (MAX5233)

2.046V (MAX5232)

o Single-Supply Operation

5V (MAX5233)

3V (MAX5232)

o Low Supply Current

470µA (MAX5233)

420µA (MAX5232)

o 13.5MHz SPI/QSPI/MICROWIRE-Compatible,

3-Wire Serial Interface

o Pin-Programmable Power-Up Reset State to Zero

or Midscale Output Voltage

o Programmable Shutdown Modes with 1kΩ or

200k

Ω Internal Output Loads

o Recalls Output State Prior to Shutdown or Reset

o Buffered Output Drives 5kΩ || 100pF Loads

o Space-Saving 16-Pin QSOP Package

3V/5V, 10-Bit, Serial Voltage-Output Dual DACs

with Internal Reference

________________________________________________________________ Maxim Integrated Products

1

Ordering Information

19-2331; Rev 1; 9/03

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.

Functional Diagram appears at end of data sheet.

SPI and QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor, Corp.

PART

TEMP RANGE

PIN-

PACKAGE

INL

(LSB)

MAX5232EEE

-40°C to +85°C

16 QSOP

±0.5

MAX5233EEE

-40°C to +85°C

16 QSOP

±0.5

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

OSA

OSB

OUTB

AGND

REF

PDL

DOUT

DGND

TOP VIEW

MAX5232

MAX5233

QSOP

OUTA

RSTV

CS

DIN

CLR

LDAC

SCLK

Pin Configuration