Texas Instruments ADS8201 Handleiding

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ADS8201

ADS8201

www.ti.com

SLAS534B–JULY2009–REVISEDMAY2010

2.2Vto5.5V,Low-Power,12-Bit,100kSPS,8-Channel

DataAcquisitionSystemwithPGAandSPI™Interface

CheckforSamples:ADS8201

1

FEATURES

•Multi-ChipReadyandFullyEnabled:

234

•Low-Power,FlexibleSupplyRange:

–GlobalCONVST(IndependentofCS)

–2.2Vto5.5VAnalogSupply•Power-DownMode

–1.32mW(100kHz,+VA=2.2V,+VD=2.2V)•24-Pin4×4QFNPackage

–4.5mW(100kHz,+VA=5V,+VD=5V)

APPLICATIONS

•Upto100kSPSThroughputRate

•PortableCommunications

•ExcellentDCPerformance:

•TransducerInterfaces

–±0.5LSBtyp,±1.5LSBmaxINL

•PortableMedicalInstruments

–±0.5LSBtyp,±1.0LSBmaxDNL

•DataAcquisitionSystems

–±6LSBOffsetErrorat+VA=5V

•GPSChipsets

–±0.1%FSGainErrorat+VA=5V

...

•FlexibleAnalogInputs:

DESCRIPTION

–TrueDifferentialInput

–Differential/UnipolarInputRange(0toV

REF

)

TheADS8201isalow-power,completeon-chipdata

acquisitionsystemoptimizedforportableapplications

–TAGBitOutput

thatrequiredirectconnections,widedynamicrange,

–ProgrammableAveragingFunction

andautomaticoperationwithverylowpower

–Onboard,EightSingle-Ended/Four

consumption.Thedeviceincludesa12-bit,

DifferentialChannelMux:

capacitor-based,successiveapproximationregister

(SAR)analog-to-digitalconverter(ADC);a

–HighInputImpedance

high-performance,continuous-timeprogrammable

–High-PerformancePGA(Gain=1/2/4/8)

gainamplifier(PGA);andafullyautomaticscan,

–PGABreakout

8-to-1multiplexer(mux)withbreakouttoallowfor

systemdesignflexibility.

–Auto/ManualChannelSelectwithGain

–Auto/ManualTrigger

Manyotherfeaturesareincludedtofurtheroptimize

systemoperation.Conversionresultsmaybesaved

–MixedTypePartialScan

inanonboardfirst-in/first-out(FIFO)bufferandread

•Built-inHardwareFeatures:

outatalatertime.Eachchannelhasagainsetting

–On-chipConversionClock(CCLK)

thatcanbeloadedautomaticallywhenitisselected.

Tosimplifytheserialportdesign,theADS8201offers

–Hardware/SoftwareReset

ahigh-speed,wide-voltageserialinterface.The

–ProgrammableStatus/PolarityforBUSY/INT

ADS8201isidealforsensorapplications(for

•FlexibleI/O:

example,bridgesensors,pressuresensors,

accelerometers,gyrosensors,temperaturesensors,

–SPI-/DSP™-CompatibleSerialInterface

etc.)asusedingamingandnavigation.

–SeparateI/OSupply(2.2Vto5.5V)

TheADS8201isavailableina24-lead,4x4QFN

–Onboard8×1FIFOBuffer

package,andisspecifiedoverthe–40°Cto+85°C

–SCLKupto25MHz(VD=5V)

industrialtemperaturerange.

...

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Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas

Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2DSPisatrademarkofTexasInstruments.

3SPIisatrademarkofMotorolaInc.

4Allothertrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2009–2010,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Product specificaties