1

®

DAC813

25k

Ω

25k

Ω

24.9k

Ω

BPO

20V Span

20V Span

V

OUT

V

REF IN

V

REF OUT

10V

Reference

12-Bit D/A

Converter

D/A Latch

Input Latch

Input Latch

Reset

4 MSBs

8 LSBs

49.5k

Ω

48

12

®

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

DAC813

DAC813

DAC813

Microprocessor-Compatible

12-BIT DIGITAL-TO-ANALOG CONVERTER

FEATURES

q

±1/2LSB NONLINEARITY OVER

TEMPERATURE

q GUARANTEED MONOTONIC OVER

TEMPERATURE

q LOW POWER: 270mW typ

q DIGITAL INTERFACE DOUBLE

BUFFERED: 12 AND 8 + 4 BITS

q SPECIFIED AT

±12V AND ±15V POWER

SUPPLIES

q RESET FUNCTION TO BIPOLAR ZERO

q 0.3" WIDE DIP AND SO PACKAGES

DESCRIPTION

The DAC813 is a complete monolithic 12-bit digital-

to-analog converter with a flexible digital interface.

It includes a precision +10V reference, interface con-

trol logic, double-buffered latch and a 12-bit D/A

converter with voltage output operational amplifier.

Fast current switches and laser-trimmed thin-film

resistors provide a highly accurate, fast D/A con-

verter.

Digital interfacing is facilitated by a double buffered

latch. The input latch consists of one 8-bit byte and

one 4-bit nibble to allow interfacing to 8-bit (right

justified format) or 16-bit data buses. Input gating

logic is designed so that the last nibble or byte to be

loaded can be loaded simultaneously with the transfer

of data to the D/A latch saving computer instructions.

A reset control allows the DAC813 D/A latch to

asynchronously reset the D/A output to bipolar zero,

a feature useful for power-up reset, recalibration, or

for system re-initialization upon system failure.

The DAC813 is specified to

±1/2LSB maximum lin-

earity error (J, A grades) and

±1/4LSB (K grade).

It is packaged in 28-pin 0.3" wide plastic DIP and

28-lead plastic SOIC

© 1990 Burr-Brown Corporation

PDS-1077G

Printed in U.S.A. March, 1998

SBAS004