Dual 16-Bit

DIGITAL-TO-ANALOG CONVERTER

DAC725

High

Byte

Low

Byte

D/A

Latch

8

8

16

16-

Bit

D/A

(A)

Control Logic

CLR

CS (A)

WR (A)

A

A

A

0

1

2

CS (B)

WR (B)

8-Bit

Data Bus

High

Byte

Low

Byte

D/A

Latch

8

8

16

16-

Bit

D/A

(B)

FEATURES

q COMPLETE DUAL V

q DOUBLE-BUFFERED INPUT REGISTER

q HIGH-SPEED DATA INPUT:

Serial or Parallel

q HIGH ACCURACY:

q 14-BIT MONOTONICITY OVER

TEMPERATURE

q PLASTIC PACKAGE

q CLEAR INPUT TO SET ZERO OUTPUT

DESCRIPTION

The DAC725 is a dual 16-bit DAC, complete with

internal reference and output op amps. The DAC725 is

designed to interface to an 8-bit microprocessor bus,

but can also be interfaced to wider buses. The hybrid

construction minimizes the digital feedthrough typi-

cally associated with products that combine the digital

bus interface circuitry with high-accuracy analog cir-

cuitry.

The 16-bit data word is loaded into either of the DACs

in two 8-bit bytes per 16-bit word. The versatility of

the control lines allows the data word to be directed to

either DAC, in any order. The voltage-out DACs are

dedicated to a bipolar output voltage of

±10V. The

output is immediately set to 0V when the Clear com-

mand is given. This feature, combined with the bus

interfacing and complete DAC circuitry, makes the

DAC725 ideal for automatic test equipment, power

control, servo systems, and robotics applications.

®

International Airport Industrial Park

•

Mailing Address: PO Box 11400

•

Tucson, AZ 85734

• Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706

Tel: (520) 746-1111 • Twx: 910-952-1111 • Cable: BBRCORP

• Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132

© 1987 Burr-Brown Corporation

PDS-757D

Printed in U.S.A. August, 1993