Texas Instruments ADS1209 Handleiding

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2nd-Order

DSModulator

CHA+

AVDD

CHA-

Output

Interface

Circuit

RC

Oscillator

20MHz

OutEN

Clock

Select

Divider

REFINA

Reference

Voltage

2.5V

REFOUT

OUTA

OUTB

CLKIN

AGNDBGND

BVDD

CLKOUT

CLKSEL

2nd-Order

DSModulator

CHB+

CHB-

REFINB

ADS1209

www.ti.com

SBAS491–FEBRUARY2010

Two1-Bit,10MHz,2nd-Order

Delta-SigmaModulators

CheckforSamples:ADS1209

1

FEATURES

DESCRIPTION

2

•16-BitResolution

TheADS1209isatwo-channel,high-performance,

delta-sigma(ΔΣ)modulatorwithan86dBdynamic

•13-BitLinearity

range,operatingfromasingle+5Vsupply.The

•±2.3VSpecifiedInputVoltageRange

differentialinputsareidealfordirectconnectionto

•InternalReferenceVoltage:2%

signalsourcesinanindustrialenvironment.Withthe

•GainError:0.5%appropriatedigitalfilterandmodulatorrate,the

devicecanbeusedtoachieve16-bitanalog-to-digital

•TwoIndependentDelta-SigmaModulators

(A/D)conversionwithnomissingcodes.Effective

•TwoInputReferenceBuffers

accuracyof14bitscanbeobtainedwithadigitalfilter

•On-ChipOscillator

bandwidthof20kHzatamodulatorrateof10MHz.

TheADS1209isdesignedforuseinhigh-resolution

•SelectableInternalorExternalClock

measurementapplicationsincludingcurrent

•SpecifiedTemperatureRange:

measurements,industrialprocesscontrol,and

–40°Cto+105°C

resolvers.ItisavailableinaTSSOP-24packageand

•TSSOP-24Package

isspecifiedforoperationovertheambient

temperaturerangeof–40°Cto+105°C.

APPLICATIONS

•MotorControl

•CurrentMeasurement

•Resolver

•IndustrialProcessControl

•Instrumentation

1

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas

Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2Alltrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2010,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Product specificaties