Texas Instruments ADS820 Handleiding

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10-Bit, 20MHz Sampling

ANALOG-TO-DIGITAL CONVERTER

FEATURES

●NO MISSING CODES

●INTERNAL REFERENCE

●LOW DIFFERENTIAL LINEARITY ERROR:

0.2LSB

●LOW POWER: 195mW

●HIGH SNR: 60dB

●WIDEBAND TRACK/HOLD: 65MHz

DESCRIPTION

The ADS820 is a low-power, monolithic 10-bit, 20MHz Ana-

log-to-Digital (A/D) converter utilizing a small geometry CMOS

process. This complete converter includes a 10-bit quantizer

with internal track-and-hold, reference, and a power down

feature. It operates from a single +5V power supply and can

be configured to accept either differential or single-ended

input signals.

The ADS820 employs digital error correction to provide excel-

lent Nyquist differential linearity performance for demanding

imaging applications. Its low distortion, high SNR, and high

oversampling capability give it the extra margin needed for

telecommunications and video applications.

This high performance converter is specified for AC and

DC-performance at a 20MHz sampling rate. The ADS820

is available in an SO-28 package.

APPLICATIONS

●SET-TOP BOXES

●CABLE MODEMS

●VIDEO DIGITIZING

●CCD IMAGING

Camcorders

Copiers

Scanners

Security Cameras

●IF AND BASEBAND DIGITIZATION

ADS820

SBAS037B – DECEMBER 1995 – REVISED FEBRUARY 2005

www.ti.com

Copyright © 1995-2005, 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.

Pipeline

A/D

Timing

Circuitry

Error

Correction

Logic

3-State

Outputs

T&H

10-Bit

Digital

Data

CLK

+1.25V

+3.25V

MSBIOE

IN

IN

REFT

CM

REFB

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

ADS820U

All trademarks are the property of their respective owners.

Product specificaties