16-Bit, Voltage Output, Serial Input

DIGITAL-TO-ANALOG CONVERTER

DESCRIPTION

The DAC7731 is a 16-bit Digital-to-Analog Converter (DAC)

which provides 16 bits of monotonic performance over the

specified operating temperature range and offers a +10V

internal reference. Designed for automatic test equipment

and industrial process control applications, the DAC7731

output swing can be configured in a

±10V, ±5V, or +10V

range. The flexibility of the output configuration allows the

DAC7731 to provide both unipolar and bipolar operation by

pin strapping. The DAC7731 includes a high-speed output

amplifier with a maximum settling time of 5

µs to ±0.003%

FSR for a 20V full-scale change and only consumes 100mW

(typical) of power.

The DAC7731 features a standard 3-wire, SPI-compatible

serial interface with double buffering to allow asynchronous

updates of the analog output as well as a serial data output

line for daisy-chaining multiple DAC7731s. A user program-

mable reset control forces the DAC output to either min-scale

(0000h) or mid-scale (8000h), overriding both the input and

DAC register values. The DAC7731 is available in a

SSOP-24 package and three performance grades specified

to operate from –40

°C to +85°C.

FEATURES

q LOW POWER: 150mW MAXIMUM

q +10V INTERNAL REFERENCE

q UNIPOLAR OR BIPOLAR OPERATION

q SETTLING TIME: 5

µs to ±0.003% FSR

q 16-BIT MONOTONICITY, –40

°C TO +85°C

q

±10V, ±5V, OR +10V CONFIGURABLE VOLTAGE

OUTPUT

q RESET TO ZERO OR MID-SCALE

q DOUBLE-BUFFERED DATA INPUT

q DAISY-CHAIN FEATURE FOR MULTIPLE

DAC7731s ON A SINGLE BUS

q SMALL SSOP-24 PACKAGE

APPLICATIONS

q PROCESS CONTROL

q ATE PIN ELECTRONICS

q CLOSED-LOOP SERVO CONTROL

q MOTOR CONTROL

q DATA ACQUISITION SYSTEMS

DAC7731

SBAS249B – DECEMBER 2001 – REVISED NOVEMBER 2007

www.ti.com

Copyright © 2001-2007, Texas Instruments Incorporated

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

Buffer

+10V

Reference

Control

Logic

Enable

Input

Register

DAC

Register

DAC

REFEN

RSTSEL

RST

LDAC

SCLK

CS

SDO

SDI

V

DD

V

SS VCC

REFADJ

REF

OUT

REF

IN

V

REF

R

OFFSET

RFB2

RFB1

SJ

V

OUT

AGND

DGND

DAC7

731

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

All trademarks are the property of their respective owners.