10-Bit, 60MHz Sampling

ANALOG-TO-DIGITAL CONVERTER

APPLICATIONS

q MEDICAL IMAGING

q COMMUNICATIONS

q CCD IMAGING

q VIDEO DIGITIZING

q TEST EQUIPMENT

DESCRIPTION

The ADS823 and ADS826 are pipeline, CMOS Analog-to-

Digital Converters (ADCs) that operate from a single +5V

power supply. These converters provide excellent perfor-

mance with a single-ended input and can be operated with a

differential input for added spurious performance. These

high-performance converters include a 10-bit quantizer, high-

bandwidth track-and-hold, and a high-accuracy internal ref-

erence. They also allow for disabling the internal reference

and utilizing external references. This external reference

option provides excellent gain and offset matching when

used in multi-channel applications or in applications where

full-scale range adjustment is required.

FEATURES

q HIGH SNR: 60dB

q HIGH SFDR: 74dBFS

q LOW POWER: 265mW

q INTERNAL/EXTERNAL REFERENCE OPTION

q SINGLE-ENDED OR

DIFFERENTIAL ANALOG INPUT

q PROGRAMMABLE INPUT RANGE

q LOW DNL: 0.25LSB

q SINGLE +5V SUPPLY OPERATION

10-Bit

Pipelined

A/D Core

Internal

Reference

Optional External

Reference

Timing

Circuitry

Error

Correction

Logic

3-State

Outputs

T/H

CLK

VDRV

ADS823

ADS826

+V

S

OE

PD

Int/Ext

D0

D9

•

•

•

IN

V

IN

IN

CM

ADS823

ADS826

ADS823

ADS826

SBAS070B – OCTOBER 1995 – REVISED AUGUST 2002

www.ti.com

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.

Copyright © 1995, 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.

q +3V/+5V LOGIC I/O COMPATIBLE (ADS826)

q POWER DOWN: 20mW

q SSOP-28 PACKAGE

The ADS823 and ADS826 employ digital error correction

techniques to provide excellent differential linearity for de-

manding imaging applications. Their low distortion and high

SNR give the extra margin needed for medical imaging,

communications, video, and test instrumentation. The ADS823

and ADS826 offer power dissipation of 265mW and also

provide a power-down mode, thus reducing power dissipa-

tion to only 20mW.

The ADS823 and ADS826 are specified at a maximum

sampling frequency of 60MHz and a single-ended input

range of 1.5V to 3.5V. The ADS823 and ADS826 are avail-

able in an SSOP-28 package and are pin-compatible with the

10-bit, 40MHz ADS822 and ADS825, and the 10-bit, 75MHz

ADS828.