Texas Instruments ADS7822-Q1 Handleiding

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FEATURESAPPLICATIONS

DESCRIPTION

SAR

Control

Serial

Interface

D

OUT

Comparator

S/HAmp

CS/SHDN

DCLOCK

+In

V

REF

-In

CDAC

ADS7822-Q1

www.ti.com

..................................................................................................................................................................................................SGLS299–MARCH2009

12-BIT200-kHzMICROPOWERSAMPLINGANALOG-TO-DIGITALCONVERTER

•Battery-OperatedSystems

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•QualifiedforAutomotiveApplications

•RemoteDataAcquisition

•200-kHzSamplingRate

•IsolatedDataAcquisition

•Micropower:

•SimultaneousSampling,MultichannelSystems

1.6mWat200kHz

0.54mWat75kHz

0.06mWat7.5kHz

•Power-DownCurrent:3µAMax

•MSOP-8Package

•Pseudo-DifferentialInput

•SerialInterface

TheADS7822isa12-bitsamplinganalog-to-digital(A/D)converterwithensuredspecificationsovera2.7-Vto

5.25-Vsupplyrange.Itrequiresverylittlepowerevenwhenoperatingatthefull200-kHzrate.Atlower

conversionrates,thehighspeedofthedeviceenablesittospendmostofitstimeinthepower-downmode—the

powerdissipationislessthan60µWat7.5kHz.

TheADS7822alsofeaturesoperationfrom2.0Vto5V,asynchronousserialinterface,andapseudo-differential

input.Thereferencevoltagecanbesettoanylevelwithintherangeof50mVtoV

CC

.

UltralowpowerandsmallsizemaketheADS7822idealforbattery-operatedsystems.Itisalsoaperfectfitfor

remotedata-acquisitionmodules,simultaneousmultichannelsystems,andisolateddataacquisition.The

ADS7822isavailableinanMSOP-8package.

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Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas

Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2Alltrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2009,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Product specificaties