®

ADS7833

1

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

ADS7833

10-Channel, 12-Bit

DATA ACQUISITION SYSTEM

FEATURES

q 3 SIMULTANEOUS SAMPLED CHANNELS

q 3 SYNCHRONIZED 12-BIT ADCs

q 6.6

q FULLY DIFFERENTIAL MUX INPUTS

q DIGITALLY SELECTABLE INPUT RANGES

q

q SERIAL DIGITAL INPUT/OUTPUTS

q 2 SIMULTANEOUS SAMPLED AUXILIARY

CHANNELS

q DIRECT INTERFACE TO MOTOROLA’S

DSP56004/7

APPLICATIONS

q AC MOTOR SPEED CONTROLS

q THREE PHASE POWER CONTROL

q UNINTERRUPTABLE POWER SUPPLIES

q VIBRATION ANALYSIS

q PC DATA ACQUISITION

q MEDICAL INSTRUMENTATION

®

12-Bit

2

2

2

12-Bit

2

2

2

12-Bit

2

2

2

2

Control

Logic

2.5V

Ref

Input Setup

Register

DAC

8-Bit

Voltage Out

Busy

Serial IN

Convert

Clock

CAP

DAC

Input Select

Gain Select

DESCRIPTION

The ADS7833 consists of three 12-bit analog-to-digi-

tal converters preceded by three simultaneously oper-

ating sample-hold amplifiers, and multiplexers for 10

differential inputs. The ADCs have simultaneous se-

rial outputs for high speed data transfer and data

processing.

The ADS7833 also offers a programmable gain ampli-

fier with programmable gains of 1.0V/V, 1.25V/V,

2.5V/V, and 5.0V/V. Channel selection and gain se-

lection are selectable through the serial input control

word. The high through put rate is maintained by

simultaneously clocking in the 13-bit input control

word for the next conversion while the present conver-

sions are clocked out.

The part also contains an 8-bit digital-to-analog con-

verter whose digital input is supplied as part of the

input control word.

PDS-1235C

Printed in U.S.A. May, 1997