General Description

The MAX5258/MAX5259 are +3V/+5V single-supply,

digital serial-input, voltage-output, 8-bit octal digital-to-

analog converters (DACs). Internal precision buffers

extends from ground to the positive supply. The +5V

(MAX5258) and the +3V (MAX5259) feature a 10µA

(max) shutdown mode.

The serial interface is double-buffered. A 16-bit input

shift register is followed by eight 8-bit input registers

and eight 8-bit DAC registers. The 16-bit serial word

consists of two “don’t care” bits, three address bits,

three control bits, and eight data bits. The input and

DAC registers can both be updated independently or

simultaneously with a single software command. The

asynchronous control input (LDAC) provides simultane-

ous updating of all eight DAC registers.

The interface is compatible with SPI™, QSPI™ (CPOL =

CPHA = 0 or CPOL = CPHA = 1), and MICROWIRE™.

A buffered digital data output allows daisy-chaining of

serial devices.

The MAX5258/MAX5259 are available in a 16-pin QSOP

package.

________________________Applications

Digital Gain and Offset Adjustment

Programmable Attenuators

Programmable Current Sources

Portable Instruments

Features

o +2.7V to +5.5V Single-Supply Operation

o Low Supply Current: 1.3mA

o Low-Power Shutdown Mode

0.54mA (MAX5259)

0.80mA (MAX5258)

o ±1LSB DNL (max)

o ±1LSB INL (max)

o Output Buffer Amplifiers Swing Rail-to-Rail

o 10MHz Serial Interface, SPI, QSPI (CPOL = CPHA

= 0 or CPOL = CPHA = 1), and MICROWIRE-

Compatible

o Double-Buffered Registers for Synchronous

Updating

o Serial Data Output for Daisy-Chaining

o Ultra-Small 16-Pin QSOP Package

+3V/+5V, Low-Power, 8-Bit Octal DACs

with Rail-to-Rail Output Buffers

________________________________________________________________ Maxim Integrated Products

1

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

OUTB

OUTC

OUTD

DOUT

DIN

CS

SCLK

OUTH

OUTG

TOP VIEW

MAX5258

MAX5259

QSOP

OUTA

OUTE

OUTF

GND

REF

LDAC

Pin Configuration

19-1844; Rev 1; 4/01

Ordering Information

PART

TEMP. RANGE PIN-PACKAGE

SUPPLY

VOLTAGE

(V)

MAX5258EEE -40

16 QSOP

+5.0

MAX5259EEE -40

16 QSOP

+3.0

SPI and QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

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

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.