Texas Instruments ADS831 Handleiding

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8-Bit, 80MHz Sampling

ANALOG-TO-DIGITAL CONVERTER

FEATURES

●HIGH SNR: 49dB

●INTERNAL OR EXTERNAL REFERENCE

OPTION

●SINGLE-ENDED OR

DIFFERENTIAL ANALOG INPUT

●PROGRAMMABLE INPUT RANGE:

1Vp-p/2Vp-p

●LOW POWER: 275mW

●LOW DNL: 0.35LSB

●SINGLE +5V SUPPLY OPERATION

●SSOP-20 PACKAGE

APPLICATIONS

●MEDICAL IMAGING

●VIDEO DIGITIZING

●COMPUTER SCANNERS

●COMMUNICATIONS

●DISK-DRIVE CONTROL

DESCRIPTION

The ADS831 is a pipeline, CMOS Analog-to-Digital (A/D) con-

verter that operates from a single +5V power supply. This con-

verter provides excellent performance with a single-ended input

and can be operated with a differential input

for added spurious performance. This high performance converter

includes an 8-bit quantizer, high bandwidth

track/hold, and a high accuracy internal reference. It also allows for

the user to disable the internal reference and utilize external

references. This external reference option provides excellent gain

and offset matching when used in multi-channel applications or in

applications where DC full scale range adjustment is required.

The ADS831 employs digital error correction techniques to pro-

vide excellent differential linearity for demanding imaging appli-

cations. Its low distortion and high SNR give the extra margin

needed for medical imaging, communications, video, and test

instrumentation.

The ADS831 is specified at a maximum sampling frequency of

80MHz and a single-ended input range of 1.5V to 3.5V. The

ADS831 is available in an SSOP-20 package and is pin-for-pin

compatible with the 8-bit, 60MHz ADS830.

TM

¤

ADS831

8-Bit

Pipelined

A/D Core

Internal

Reference

Optional External

Reference

Timing

Circuitry

Error

Correction

Logic

3-State

Outputs

T/H

CLKVDRV

ADS831

+V

S

Int/Ext

D0

D7

•

•

•

INV

IN

IN

(Opt)

ADS831

SBAS087A – MAY 2001

www.ti.com

PRODUCTION DATA information is current as of publication date.

Products conform to specications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Copyright © 1998, Texas Instruments Incorporated

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

Product specificaties