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REF−

+IN

REF+

SDI

SCLK

SDO

CDAC

SAR

COMPARATOR

OUTPUT

LATCH

and

3−STATE

DRIVER

CONVERSION

and

CONTROL

LOGIC

−IN

+IN1

+IN0

COM

NC

OSC

_

+

ADS8328ADS8327

FS/CS

CONVST

EOC/INT/CDI

ADS8327

ADS8328

www.ti.com

SLAS415E–APRIL2006–REVISEDJANUARY2011

LOWPOWER,16-BIT,500-kHz,SINGLE/DUALUNIPOLARINPUT,ANALOG-TO-DIGITAL

CONVERTERSWITHSERIALINTERFACE

CheckforSamples:ADS8327,ADS8328

1

FEATURES

APPLICATIONS

•Communications

•2.7-Vto5.5-VAnalogSupply,LowPower:

•TransducerInterface

–10.6mW(500kHz,+VA=2.7V,

•MedicalInstruments

+VBD=1.8V)

•Magnetometers

•500-kHzSamplingRate

•IndustrialProcessControl

•ExcellentDCPerformance

•DataAcquisitionSystems

–±1.5LSBTyp,±2LSBMaxINL

•AutomaticTestEquipment

–±0.6LSBTyp,±1LSBMaxDNL

–16-BitNMCOverTemperature

DESCRIPTION

–±0.5mVMaxOffsetErrorat2.7V

TheADS8327isalowpower,16-bit,500-kSPS

–±1mVMaxOffsetErrorat5V

analog-to-digitalconverterwithaunipolarinput.The

•ExcellentACPerformanceatf

I

=10kHzwith

deviceincludesa16-bitcapacitor-basedSARA/D

converterwithinherentsampleandhold.

91dBSNR,100dBSFDR,–96dBTHD

•Built-InConversionClock(CCLK)

TheADS8328isbasedonthesamecoreand

includesa2-to-1inputMUXwithprogrammable

•1.65Vto1.5×(+VA)I/OSupply

optionofTAGbitoutput.BoththeADS8327and

–SPI/DSPCompatibleSerial

ADS8328offerahigh-speed,widevoltageserial

–SCLKupto50MHz

interfaceandarecapableofchainmodeoperation

whenmultipleconvertersareused.

•ComprehensivePower-DownModes:

–DeepPower-Down

Theseconvertersareavailableina16-leadTSSOP

or4x4QFNpackagesandarefullyspecifiedfor

–NapPower-Down

operationovertheindustrial–40°Cto+85°C

–AutoNapPower-Down

temperaturerange.

•UnipolarInputRange:0VtoV

REF

Table1.LowPower,High-SpeedSARConverter

•SoftwareReset

Family

•GlobalCONVST(IndependentofCS)

Type/Speed500kHz1MHz

•ProgrammableStatus/PolarityEOC/INT

SingleADS8327ADS8329

•16-Pin4×4QFNor16-PinTSSOPPackages

16BitPseudo-Diff

DualADS8328ADS8330

•Multi-ChipDaisyChainMode

•ProgrammableTAGBitOutput

•Auto/ManualChannelSelectMode

1

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas

Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

©2006–2011,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Produktspecifikationer