General Description

The MAX5544 serial-input, voltage-output, 14-bit

monotonic digital-to-analog converter (DAC) operates

from a single +5V supply. The DAC output is

unbuffered, resulting in low 0.3mA supply current and

low 1LSB offset error. The DAC output range is 0V to

power-on reset circuit clears the DAC output to 0V

(unipolar mode) when power is initially applied.

The 10MHz 3-wire serial interface is SPI™/QSPI™/

MICROWIRE™ compatible and interfaces directly with

optocouplers for applications requiring isolation. The

MAX5544 is available in an 8-pin SO package.

Applications

High-Resolution Offset and Gain Adjustment

Industrial Process Control

Automated Test Equipment

Data Acquisition Systems

Features

o Full 14-Bit Performance Without Adjustments

o +5V Single-Supply Operation

o Low Power: 1.5mW

o 1µs Settling Time

o Unbuffered Voltage Output Directly Drives 60kΩ

Loads

o SPI/QSPI/MICROWIRE-Compatible Serial Interface

o Power-On Reset Circuit Clears DAC Output to 0V

(unipolar mode)

o Schmitt Trigger Inputs for Direct Optocoupler

Interface

Low-Cost, +5V, Serial-Input,

Voltage-Output, 14-Bit DAC

________________________________________________________________ Maxim Integrated Products

1

TOP VIEW

SO

DIN

REF

SCLK

CS

1

2

8

7

DGND

AGND

OUT

MAX5544

3

4

6

5

Pin Configuration

14-BIT DAC

16-BIT DATA LATCH

SERIAL INPUT REGISTER

CONTROL

LOGIC

MAX5544

REF

CS

DIN

SCLK

AGND

OUT

DGND

Functional Diagram

19-1571; Rev 0; 12/99

Ordering Information

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 1-800-835-8769.

PART

MAX5544CSA

MAX5544ESA

TEMP. RANGE

0°C to +70°C

-40°C to +85°C

PIN-PACKAGE

8 SO

8 SO