Microprocessor-Compatible

16-BIT DIGITAL-TO-ANALOG CONVERTERS

FEATURES

q TWO-CHIP CONSTRUCTION

q HIGH-SPEED 16-BIT PARALLEL, 8-BIT

(BYTE) PARALLEL, AND SERIAL INPUT

MODES

q DOUBLE-BUFFERED INPUT REGISTER

CONFIGURATION

q V

q HIGH ACCURACY:

Linearity Error

Differential Linearity Error

max

q MONOTONIC (TO 14 BITS) OVER

SPECIFIED TEMPERATURE RANGE

q HERMETICALLY SEALED

q LOW COST PLASTIC VERSIONS

AVAILABLE (DAC707JP/KP)

DESCRIPTION

The DAC708 and DAC709 are 16-bit converters de-

signed to interface to an 8-bit microprocessor bus. 16-

bit data is loaded in two successive 8-bit bytes into

parallel 8-bit latches before being transferred into the

D/A latch. The DAC708 and DAC709 are current and

voltage output models respectively and are in 24-pin

hermetic DIPs. Input coding is Binary Two’s Comple-

ment (bipolar) or Unipolar Straight Binary (unipolar,

when an external logic inverter is used to invert the

MSB). In addition, the DAC708/709 can be loaded

serially (MSB first).

The DAC707 is designed to interface to a 16-bit bus.

Data is written into a 16-bit latch and subsequently the

D/A latch. The DAC707 has bipolar voltage output

and input coding is Binary Two’s Complement (BTC).

All models have Write and Clear control lines as well

as input latch enable lines. In addition, DAC708 and

DAC709 have Chip Select control lines. In the bipolar

mode, the Clear input sets the D/A latch to give zero

voltage or current output. They are all 14-bit accurate

and are complete with reference, and for the DAC707,

and DAC709, a voltage output amplifier. All models

are available with an optional burn-in screening.

DAC707/708/709 Block Diagram

High

Byte

Latch

Latch Enables/

Mode Select

Control

Logic

CLEAR

WRITE

CHIP SELECT

16-Bit

D/A

Con-

verter

DAC707 or DAC709

Only

Summing Junction (708, 709)

10V Range (708, 709)

V

OUT

Reference

Circuit

Bipolar

Offset

Low

Byte

Latch

D/A

Latch

Serial

(DAC708, 709)

8-Bit

(DAC708, 709)

or

16-Bit (DAC707)

Serial

Data

PDS-557H

®

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

Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132

DAC707

DAC708

DAC709

SBAS145