FEATURESDESCRIPTION
产品
内部的 2.5v
涉及
RC 振荡器
20MHz
接口
电路
MDATA
IADJ
IOUT
AVDD
ADS1208
REFOUT
REFIN
V
IN+
V
在
−
MDATA
BVDD
MCLK
M0
M1
MCLK
缓存区
缓存区
缓存区
缓存区
2nd−Order
∆Σ
Modulator
BGNDAGND
AVDD
ADS1208
SBAS348A–MARCH2005–REVISEDMARCH2005
2nd-orderdelta-sigmamodulator
withExcitationforHallElements
•
±100mVSpecifiedInputRange
theads1208isa2nd-顺序
∆Σ
(delta-sigma)modu-
latoroperatingata10mhzclockrate.thespecified
•
±125mvfull-scalerange
inputrangeis±100mv,optimizedforcurrent
•
95dbtyp.cmr,82dbtyp.snr
measurementwithahallsensor,especiallyinmotor
•
AdjustableCurrentOutputforSensorBiasing
controlapplications.theads1208containsa
•
digitaloutputcompatibletoads1202/03
programmablecurrentsourceforsensorbiasingand
hasintegratedinputbuffersforfastsettlingofthe
•
DifferentialDigitalOutputs
samplecapacitors;italsorequiresonlyaminimumof
•
separate2.7vto5.5vdigitalsupplypin
externalcomponents.thedifferentialanaloginput
offerslownoiseandexcellentcommon-moderejec-
tion.
•
MotorControl
•
CurrentMeasurement
•
HallSensors
•
BridgeSensors
•
仪器
pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
productiondatainformationiscurrentasofpublicationdate.
copyright©2005,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
necessarilyincludetestingofallparameters.
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