FEATURESDESCRIPTION
应用程序
内部 2.5v
参考
rc 振荡器
20MHz
接口
电路
MDATA
IADJ
IOUT
AVDD
ADS1208
REFOUT
REFIN
v
IN+
v
入点
−
MDATA
BVDD
mclk
M0
M1
mclk
缓冲区
缓冲区
缓冲区
缓冲区
2nd−Order
∆Σ
调制器
BGNDAGND
AVDD
ADS1208
SBAS348A–MARCH2005–REVISEDMARCH2005
2nd-orderdelta-sigmamodulator
withExcitationforHallElements
•
±100mVSpecifiedInputRange
theads1208isa2nd-订单
∆Σ
(三角洲-西格玛)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-
操作.
•
MotorControl
•
CurrentMeasurement
•
HallSensors
•
BridgeSensors
•
仪器仪表
pleasebeawarethatanimportantnoticeconcerningavailability,标准保修,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
productiondatainformationiscurrentasofpublicationdate.
copyright©2005,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
必要包括测试所有参数.
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