ADC574 Burr-Brown Corporation, ADC574 Datasheet

ADC574

Manufacturer Part Number

ADC574

Description

Microprocessor-compatible Analog-to-digital Converter

Manufacturer

Burr-Brown Corporation

Datasheet

1.ADC574.pdf (10 pages)

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FEATURES

DESCRIPTION

The ADC574A is a 12-bit successive approximation

analog-to-digital converter, utilizing state-of-the-art

CMOS and laser-trimmed bipolar die custom-designed

International Airport Industrial Park

Control

Inputs

Bipolar

Offset

20V Range

10V Range

Reference

Input

Reference

Output

Tel: (520) 746-1111

COMPLETE 12-BIT A/D CONVERTER WITH

REFERENCE, CLOCK, AND 8-, 12-, or 16-

BIT MICROPROCESSOR BUS INTERFACE

IMPROVED PERFORMANCE SECOND

SOURCE FOR 574A-TYPE A/D

CONVERTERS

Conversion Time: 25 s max

Bus Access Time: 150ns max

Operation Eliminated

DUAL IN-LINE PLASTIC, PLCC AND

HERMETIC CERAMIC

FULLY SPECIFIED FOR OPERATION ON

NO MISSING CODES OVER

TEMPERATURE:

0 C to +75 C: ADC574AJ and K Grades

–55 C to +125 C: ADC574ASH, TH

12V OR 15V SUPPLIES

Input: Bus Contention During Read

ANALOG-TO-DIGITAL CONVERTER

•

Twx: 910-952-1111

Microprocessor-Compatible

•

Mailing Address: PO Box 11400

•

Cable: BBRCORP

Comparator

FPO

•

Telex: 066-6491

PDS-550G

Tucson, AZ 85734

Clock

for freedom from latch-up and for optimum AC per-

formance. It is complete with a self-contained +10V

reference, internal clock, digital interface for micropro-

cessor control, and three-state outputs.

The reference circuit, containing a buried zener, is laser-

trimmed for minimum temperature coefficient. The

clock oscillator is current-controlled for excellent sta-

bility over temperature. Full-scale and offset errors may

be externally trimmed to zero. Internal scaling resistors

are provided for the selection of analog input signal

ranges of 0V to +10V, 0V to +20V, 5V, and 10V.

The converter may be externally programmed to pro-

vide 8- or 12-bit resolution. The conversion time for 12

bits is factory set for 25 s maximum.

Output data are available in a parallel format from TTL-

compatible three-state output buffers. Output data are

coded in straight binary for unipolar input signals and

bipolar offset binary for bipolar input signals.

The ADC574A, available in both industrial and military

temperature ranges, requires supply voltages of +5V

and 12V or 15V. It is packaged in a 28-pin plastic

DIP, and a hermetic side-brazed ceramic DIP.

Control Logic

12-Bit D/A

Converter

Reference

10V

•

FAX: (520) 889-1510

• Street Address: 6730 S. Tucson Blvd.

•

Immediate Product Info: (800) 548-6132

ADC574A

Printed in U.S.A., August, 1993

• Tucson, AZ 85706

Status

Parallel

Data

Output

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