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FEATURES

APPLICATIONS

DESCRIPTION

SAR

Control

Serial

Interface

D

OUT

Comparator

S/HAmp

CS/SHDN

DCLOCK

+In

V

REF

-In

CDAC

ADS7822-Q1

12-BIT 200-kHz MICROPOWER SAMPLING ANALOG-TO-DIGITAL CONVERTER

• Battery-Operated Systems

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• Qualified for Automotive Applications

• Remote Data Acquisition

• 200-kHz Sampling Rate

• Isolated Data Acquisition

• Micropower:

• Simultaneous Sampling, Multichannel Systems

1.6 mW at 200 kHz

0.54 mW at 75 kHz

0.06 mW at 7.5 kHz

• Power-Down Current: 3 µA Max

• MSOP-8 Package

• Pseudo-Differential Input

• Serial Interface

The ADS7822 is a 12-bit sampling analog-to-digital (A/D) converter with ensured specifications over a 2.7-V to

5.25-V supply range. It requires very little power even when operating at the full 200-kHz 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 7.5 kHz.

The ADS7822 also features operation from 2.0 V to 5 V, a synchronous serial interface, and a pseudo-differential

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 multichannel systems, and isolated data acquisition. The

ADS7822 is available in an MSOP-8 package.

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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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All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2009, 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.