Texas Instruments LMP8350 Bedienungsanleitung

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LMP8350

SNOSB80C–FEBRUARY2011–REVISEDOCTOBER2015

LMP8350Ultra-LowDistortionFully-DifferentialPrecisionADCDriverWithSelectable

PowerModes

1Features3Description

TheLMP8350deviceisanultralowdistortionfully-

1

•DifferentialInputandOutput

differentialamplifierdesignedfordrivinghigh-

•Tri-LevelPowerSettingswithShutdown

performanceprecisionanalog-to-digitalconverters

•UltraLowHD2/HD3andTHD+NDistortion

(ADC).AspartofthePowerWise™family,aunique

modeenablepinallowstheusertochoosefromthree

•AdjustableOutputCommon-ModeLevel

differentoperatingmodes,tradingpower

•Fully-BalancedDifferentialArchitecture

consumptionfordynamicperformance.

•Single-orDual-SupplyOperation

ThehighpowermodeisoptimizedforhighestAC

•OperatingVoltageRange4.5Vto12V

performance.Thelownoise,widebandwidth,and

•SupplyCurrent3mAto13mA

fastslewratemaketheLMP8350idealfordriving24-

bitADCswithinputsamplingratesof10MHzorless.

•TotalTHD+Nat1KHz0.000097%

Themediumpowermodeisoptimizedforprecision

•HD2/HD3Distortionat1KHz<–124dBc

DCperformance,andcanbeusedtodrive24-bit

•Bandwidth118mHz

ADCswithinputsamplingratesof6MHzorless.The

•Settlingto0.1%20ns

lowpowermodeisatrade-offbetweenAC

performanceandquiescentcurrentforpower-

•LowOffsetDrift0.4µV/°C

sensitiveapplications.Thedisablemodefullyshuts

•OffsetVoltage80µV

downtheamplifierforfurtherstandbypowersavings.

•VoltageNoise4.6nV/Hz

Thefullydifferentialarchitectureofthisdeviceallows

•OperatingTemperatureRange−40°Cto+85°C

foreasyimplementationofasingle-endedtofully-

differentialoutputconversion.Drivinga3-Vpp,1-kHz

2Applications

outputsinewavewiththeamplifierpoweredby±3.3-

Vrailsinhighpowermodeyields0.000098%

•High-ResolutionDifferentialADCDrivers

THD+N.

•PortableInstrumentation

TheLMP8350ispartoftheLMP™precisionamplifier

•PrecisionLineDrivers

family,andisofferedinthe8-pinSOICpackage,with

anoperatingtemperaturerangeof−40°Cto+85°C.

DeviceInformation

(1)

PARTNUMBERPACKAGEBODYSIZE(NOM)

LMP8350SOIC(8)3.91mm×4.90mm

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

TypicalApplication

1

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

Produktspezifikationen