BurrBrown Products

from Texas Instruments

ADS7822

ADS7822

1

FEATURES

DESCRIPTION

APPLICATIONS

SAR

Control

Serial

Interface

D

OUT

Comparator

S/HAmp

CS/SHDN

DCLOCK

+In

V

REF

-In

CDAC

ADS7822

SBAS062C – JANUARY 1996 – REVISED AUGUST 2007

12-Bit, 200kHz, microPower Sampling

ANALOG-TO-DIGITAL CONVERTER

2

• 200kHz Sampling Rate

• microPower:

The ADS7822 is a 12-bit sampling analog-to-digital

(A/D) converter with ensured specifications over a

1.6mW at 200kHz

2.7V to 5.25V supply range. It requires very little

0.54mW at 75kHz

power even when operating at the full 200kHz rate. At

0.06mW at 7.5kHz

lower conversion rates, the high speed of the device

• Power Down: 3μA max

enables

it

to

spend

most

of

its

time

in

the

• Mini-DIP-8, SO-8, and MSOP-8 Packages

power-down mode—the power dissipation is less

than 60

μW at 7.5kHz.

• Pseudo-Differential Input

• Serial Interface

The ADS7822 also features operation from 2.0V to

5V,

a

synchronous

serial

interface,

and

a

pseudo-differential input. The reference voltage can

• Battery-Operated Systems

Ultra low power and small size make the ADS7822

• Remote Data Acquisition

ideal for battery-operated systems. It is also a perfect

• Isolated Data Acquisition

fit for remote data-acquisition modules, simultaneous

• Simultaneous Sampling, Multichannel Systems

multichannel systems, and isolated data acquisition.

The ADS7822 is available in a plastic mini-DIP-8, an

SO-8, or an MSOP-8 package.

1

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.

2

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 1996–2007, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.