Texas Instruments ADS5484 Handleiding

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f

I

N

− Input Frequency − MHz

60

70

80

90

100

0

50100150200250300

SFDR − dBc

G001

170 MSPS, No Dither

170 MSPS, Dither Enabled

200 MSPS, No Dither

200 MSPS, Dither Enabled

f

I

N

− Input Frequency − MHz

70

71

72

73

74

75

76

77

78

0

50100150200250300

SNR − dBFS

G002

200 MSPS, Dither Enabled

170 MSPS, Dither Enabled

170 MSPS, No Dither

200 MSPS, No Dither

ADS5484

ADS5485

www.ti.com

...............................................................................................................................................SLAS610C–AUGUST2008–REVISEDOCTOBER2009

16-Bit,170/200-MSPSAnalog-to-DigitalConverters

CheckforSamples:ADS5484ADS5485

1

FEATURESAPPLICATIONS

•WirelessInfrastructure

23

•170/200-MSPSSampleRates

•TestandMeasurementInstrumentation

•16-BitResolution,78dBFSNoiseFloor

•Software-DefinedRadio

•SFDR=95dBc

•DataAcquisition

•On-ChipHighImpedanceAnalogBuffer

•PowerAmplifierLinearization

•EfficientDDRLVDS-CompatibleOutputs

•Radar

•Power-DownMode:70mW

•MedicalImaging

•Pin-for-PinwithADS5483/5482/5481,

135/105/80-MSPSADCs

•QFN-64PowerPAD™Package

(9mm×9mmfootprint)

•IndustrialTemperatureRange:

–40°Cto85°C

DESCRIPTION

TheADS5484/ADS5485(ADS548x)isa16-bitfamilyofanalog-to-digitalconverters(ADCs)thatoperatefrom

botha5-Vsupplyand3.3-VsupplywhileprovidingLVDS-compatibledigitaloutputs.TheADS548xintegrated

analoginputbufferisolatestheinternalswitchingoftheonboardtrackandhold(T&H)fromdisturbingthesignal

sourcewhileprovidingahigh-impedanceinput.Aninternalreferencegeneratorisprovidedtosimplifythesystem

design.InternalditherisavailabletoimproveSFDR.Thesedevicesaredrop-incompatibletothe

ADS5483/5482/5481,creatingapin-compatiblefamilyfrom80–200MSPS.DesignedforhighesttotalENOB,

theADS548xfamilyhasoutstandinglownoiseperformanceandspurious-freedynamicrange.

TheADS548xfamilyisavailableinaQFN-64PowerPADpackage.ThedevicesarebuiltonTexasInstruments

complementarybipolarprocess(BiCom3)andarespecifiedoverthefullindustrialtemperaturerange(–40°Cto

85°C).

SFDRSNR

vsvs

INPUTFREQUENCYINPUTFREQUENCY

1

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas

Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2PowerPADisatrademarkofTexasInstruments.

3Allothertrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2008–2009,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Product specificaties