General Description

The MAX5171/MAX5173 low-power, serial, voltage-output,

14-bit digital-to-analog converters (DACs) feature a preci-

sion output amplifier in a space-saving 16-pin QSOP

package. The MAX5171 operates from a +5V single sup-

ply, and the MAX5173 operates from a +3V single supply.

The output amplifier’s inverting input is available to allow

specific gain configurations, remote sensing, and high

output current capability. This makes the MAX5171/

MAX5173 ideal for a wide range of applications, including

industrial process control. Both devices draw only 260µA

of supply current, which reduces to 1µA in shutdown

mode. In addition, the programmable power-up reset fea-

ture allows for a user-selectable output voltage of either 0

or midscale.

The 3-wire serial interface is compatible with SPI™,

QSPI™, and MICROWIRE™ standards. An input register

followed by a DAC register provides a double-buffered

input, allowing the input and DAC registers to be updated

independently or simultaneously with a 16-bit serial word.

Additional features include software and hardware shut-

down, shutdown lockout, a hardware clear pin, and a ref-

erence input capable of accepting DC and offset AC

signals. These devices provide a programmable digital

output pin for added functionality and a serial-data output

pin for daisy-chaining. All logic inputs are TTL/CMOS-

compatible and are internally buffered with Schmitt trig-

gers to allow direct interfacing to optocouplers.

The MAX5171/MAX5173 incorporate a proprietary on-chip

circuit that keeps the output voltage virtually “glitch free,”

limiting the glitches to a few millivolts during power-up.

Both devices are available in 16-pin QSOP packages and

are specified for the extended (-40°C to +85°C) tempera-

ture range. The MAX5171/MAX5173 are pin-compatible

upgrades to the 12-bit MAX5175/MAX5177. For 100% pin-

compatible DACs with an internal reference, see the 13-bit

MAX5132/MAX5133 and the 12-bit MAX5122/MAX5123

data sheets.

Applications

Features

o ±1 LSB INL

o 1µA Shutdown Current

o “Glitch Free” Output Voltage at Power-Up

o Single-Supply Operation: +5V (MAX5171)

+3V (MAX5173)

o Full-Scale Output Range:

o Low THD (-80dB) in Multiplying Operation

o SPI/QSPI/MICROWIRE-Compatible 3-Wire

Serial Interface

o Programmable Shutdown Mode and Power-Up

Reset

o Buffered Output Capable of Driving 5k

Ω || 100pF

Loads

o User-Programmable Digital Output Pin Allows

Serial Control of External Components

o Pin-Compatible Upgrade to the 12-Bit

MAX5175/MAX5177

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.

Low-Power, Serial, 14-Bit DACs

with Force/Sense Voltage Output

________________________________________________________________

Maxim Integrated Products

1

19-1476; Rev 0; 4/99

Pin Configuration

Functional Diagram appears at end of data sheet.

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

FB

N.C.

REF

AGND

PDL

UPO

DOUT

DGND

TOP VIEW

MAX5171

MAX5173

QSOP

OUT

RS

CS

SHDN

CLR

DIN

SCLK

Ordering Information

Digitally Programmable 4–20mA Current Loops

Industrial Process Control

Digital Offset and Gain Adjustment

Motion Control

Automatic Test Equipment (ATE)

Remote Industrial Controls

µP-Controlled Systems

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.

PART

MAX5171AEEE

MAX5171BEEE

MAX5173AEEE

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

TEMP. RANGE

PIN-PACKAGE

16 QSOP

16 QSOP

16 QSOP

MAX5173BEEE

-40°C to +85°C

16 QSOP

INL

(LSB)

±1

±2

±2

±4