ADS7822

DESCRIPTION

The ADS7822 is a 12-bit sampling analog-to-digital (A/D)

converter with ensured specifications over a 2.7V to 5.25V

supply range. It requires very little power even when oper-

ating at the full 75kHz rate. At lower conversion rates, the

high speed of the device enables it to spend most of its time

in the power-down mode—the power dissipation is less than

60

µW at 7.5kHz.

The ADS7822 also features operation from 2.0V to 5V, a

synchronous serial interface, and a pseudo-differential input.

The reference voltage can be set to any level within the

Ultra low power and small size make the ADS7822 ideal for

battery-operated systems. It is also a perfect fit for remote

data acquisition modules, simultaneous multi-channel sys-

tems, and isolated data acquisition. The ADS7822 is avail-

able in a plastic mini-DIP-8, an SOIC-8, or an MSOP-8

package.

12-Bit, High-Speed, 2.7V

microPower Sampling

ANALOG-TO-DIGITAL CONVERTER

FEATURES

q 75kHz SAMPLING RATE

q MICRO POWER:

0.54mW at 75kHz

0.06mW at 7.5kHz

q POWER DOWN: 3

q MINI-DIP-8, SOIC-8, AND MSOP-8

q PSEUDO-DIFFERENTIAL INPUT

q SERIAL INTERFACE

SAR

Control

Serial

Interface

D

OUT

Comparator

S/H Amp

CS/SHDN

DCLOCK

+In

V

REF

–In

CDAC

APPLICATIONS

q BATTERY-OPERATED SYSTEMS

q REMOTE DATA ACQUISITION

q ISOLATED DATA ACQUISITION

q SIMULTANEOUS SAMPLING,

MULTI-CHANNEL SYSTEMS

OPA658

ADS7

822

ADS7

822

SBAS062A – JANUARY 1996 – REVISED MARCH 2005

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 © 1996-2005, 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.

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