_______________General Description

The MAX5158/MAX5159 low-power, serial, voltage-

output, dual, 10-bit digital-to-analog converters (DACs)

consume only 500µA from a single +5V (MAX5158) or

+3V (MAX5159) supply. These devices feature Rail-to-

16-pin QSOP package. To maximize 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 registers

to be updated independently or simultaneously with a

16-bit serial word. Additional features include a 2µA pro-

grammable shutdown, hardware-shutdown lockout, 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. The

MAX5158/MAX5159 provide a programmable logic pin

for added functionality and a serial-data output pin for

daisy chaining.

________________________Applications

Digital Offset and Gain Adjustment

µP-Controlled Systems

Motion Control

Remote Industrial Controls

____________________________Features

o 10-Bit Dual DAC with Internal Gain of +2V/V

o Rail-to-Rail Output Swing

o 8µs Settling Time

o Single-Supply Operation: +5V (MAX5158)

+3V (MAX5159)

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

______________Ordering Information

Rail-to-Rail is a registered trademark of Nippon Motorola Ltd. Microwire is a trademark of National Semiconductor Corp.

SPI and QSPI are trademarks of Motorola, Inc.

Ordering Information continued at end of data sheet.

*

Contact factory for availability.

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

MAX5158

MAX5159

OUTB

R

R

R

R

OSB

OUTA

OSA

_________________________________________________________Functional Diagram

Low-Power, Dual, 10-Bit, Voltage-Output DACs

with Serial Interface

________________________________________________________________

Maxim Integrated Products

1

19-1315; Rev 1; 12/97

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.

PIN-PACKAGE

TEMP. RANGE

PART

16 QSOP

-40°C to +85°C

MAX5158EEE

16 Plastic DIP

16 QSOP

16 Plastic DIP

0°C to +70°C

0°C to +70°C

-40°C to +85°C

MAX5158EPE

MAX5158CEE

MAX5158CPE

16 CERDIP*

-55°C to +125°C

MAX5158MJE