Texas Instruments ADS1208 Handleiding

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FEATURESDESCRIPTION

APPLICATIONS

Internal2.5V

Reference

RCOscillator

20MHz

Interface

Circuit

MDATA

IADJ

IOUT

AVDD

ADS1208

REFOUT

REFIN

V

IN+

V

IN

−

MDATA

BVDD

MCLK

M0

M1

MCLK

Buffer

Buffer

Buffer

Buffer

2nd−Order

∆Σ

Modulator

BGNDAGND

AVDD

ADS1208

SBAS348A–MARCH2005–REVISEDMARCH2005

2nd-OrderDelta-SigmaModulator

withExcitationforHallElements

•±100mVSpecifiedInputRange

TheADS1208isa2nd-order∆Σ(delta-sigma)modu-

latoroperatingata10MHzclockrate.Thespecified

•±125mVFull-ScaleRange

inputrangeis±100mV,optimizedforcurrent

•95dBtyp.CMR,82dBtyp.SNR

measurementwithaHallsensor,especiallyinmotor

•AdjustableCurrentOutputforSensorBiasing

controlapplications.TheADS1208containsa

•DigitalOutputCompatibletoADS1202/03programmablecurrentsourceforsensorbiasingand

hasintegratedinputbuffersforfastsettlingofthe

•DifferentialDigitalOutputs

samplecapacitors;italsorequiresonlyaminimumof

•Separate2.7Vto5.5VDigitalSupplyPin

externalcomponents.Thedifferentialanaloginput

offerslownoiseandexcellentcommon-moderejec-

tion.

•MotorControl

•CurrentMeasurement

•HallSensors

•BridgeSensors

•Instrumentation

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas

Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2005,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Product specificaties