ADS7832

Autocalibrating, 4-Channel, 12-Bit

ANALOG-TO-DIGITAL CONVERTER

DESCRIPTION

The ADS7832 is a monolithic CMOS 12-bit analog-

to-digital converter with internal sample/hold and four-

channel multiplexer. It is designed and tested for full

dynamic performance with input signals to 50kHz.

The 5V single-supply requirements and standard CS,

RD, and WR control signals make the part easy to use

in microprocessor applications. Conversion results are

available in two bytes through an 8-bit three-state

output bus.

The ADS7832 is available in a 28-pin plastic DIP and

28-lead PLCC, fully specified for operation over the

industrial –40

°C to +85°C temperature range.

FEATURES

q PIN COMPATIBLE TO ADC7802 AND

ADS7803

q SINGLE SUPPLY: +5V OR +3.3V

q LOW POWER: 14mW plus Power Down

q SIGNAL-TO-(NOISE + DISTORTION)

RATIO OVER TEMPERATURE:

q FAST CONVERSION TIME: 8.5

Including Acquisition (117kHz Sampling

Rate)

q FOUR-CHANNEL INPUT MULTIPLEXER

q AUTOCAL: No offset or Gain Adjust

Required

ADS7832

ADS7832

PDS-1332B

Printed in U.S.A. April, 1998

Three-State

Input/Output

CS

Control

Logic

RD

WR

SFR

BUSY

8-Bit

Data Bus

Capacitor Array

Sampling ADC

Analog

Multiplexer

AIN0

AIN1

AIN2

AIN3

Calibration

Microcontroller

and Memory

A0

A1

Clock

V

Address

Latch and

Decoder

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

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