Texas Instruments ADS7251 Handleiding

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+V

VCM

+V

+V

R

C

C

R

AINP

AINM

+V

VCM

+V

+V

R

C

C

R

AINP

AINM

Internal

Reference

ADS7851,

ADS7251

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ADS7251

,

ADS7851

SBAS587A–JANUARY2014–REVISEDAPRIL2014

ADS7x5112-Bit,2-MSPSand14-Bit,1.5-MSPS,Dual,DifferentialInput,Simultaneous-

Sampling,Analog-to-DigitalConverterswithInternalReference

1Features3Description

TheADS7251andADS7851belongtoafamilyof

1

•12-and14-BitPin-CompatibleFamily

pin-compatible,dual,high-speed,simultaneous-

•SimultaneousSamplingofTwoChannels

sampling,analog-to-digitalconverters(ADCs)that

•SupportsFully-DifferentialAnalogInputs

supportfully-differentialanaloginputsandfeaturetwo

independentinternalvoltagereferences.The

•IndependentInternalReference(perADC)

ADS7251offers12-bitresolutionandupto2-MSPS

•HighSpeed:

samplingspeed.TheADS7851offers14-bit

–Upto2MSPSwiththeADS7251(12-Bit)

resolutionandupto1.5-MSPSsamplingspeed.

–Upto1.5MSPSwiththeADS7851(14-Bit)

Thedevicessupportawidedigitalsupplyvoltage

•ExcellentPerformance:

range,allowingeasycommunicationwithavarietyof

digitalhostcontrollersusingasimple,serialinterface.

–ADS7251:

Bothdevicesarefullyspecifiedovertheextended

–SNR:73dB

industrialtemperaturerange(–40°Cto+125°C)and

–INL:±1LSB

areavailableinapin-compatible,space-saving,

WQFN-16(3-mm×3-mm)package.

–ADS7851:

–SNR:83.5dB

DeviceInformation

–INL:±2LSB

ORDERNUMBERPACKAGEBODYSIZE

•Fully-SpecifiedOvertheExtendedIndustrial

ADS7251RTEWQFN(16)3mm×3mm

TemperatureRange:–40°Cto+125°C

ADS7851RTEWQFN(16)3mm×3mm

•SmallFootprint:WQFN-16(3mm×3mm)

TypicalApplicationDiagram

2Applications

•MotorControl:DirectInterfacetoSinCos

Encoders

•OpticalNetworking:EDFAGainControlLoop

•ProtectionRelays

•PowerQualityMeasurement

•Three-PhasePowerControls

•ProgrammableLogicControllers

•IndustrialAutomation

1

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

Product specificaties