Texas Instruments LPV812 Handleiding

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Offset Voltage (µV)

C002

21492 Amplifiers

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Reference

Design

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

LPV811,LPV812

SNOSD33B–NOVEMBER2016–REVISEDNOVEMBER2016

LPV811/LPV812Precision425nANanopowerOperationalAmplifiers

1

1Features

1

•NanopowerSupplyCurrent:425nA/channel

•OffsetVoltage:300µV(max)

•TcVos:1µV/°C

•Gain-Bandwidth:8kHz

•Unity-GainStable

•LowInputBiasCurrent:100fA

•WideSupplyRange:1.6Vto5.5V

•Rail-to-RailOutput

•NoOutputReversals

•EMIProtection

•TemperatureRange:–40°Cto125°C

•IndustryStandardPackages:

–Singlein5-pinSOT-23

–Dualin8-pinVSSOP

2Applications

•COandO

2

GasDetectors(TIDA-0756)

•PIRMotionDetectors

•CurrentSensing

•Thermostats

•IoTRemoteSensors

•ActiveRFIDReadersandTags

•PortableMedicalEquipment

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

3Description

TheLPV811(single)andLPV812(dual)areaultra-

low-powerprecisionoperationalamplifierfamilyfor

“AlwaysON”sensingapplicationsinbatterypowered

wirelessandlowpowerwiredequipment.With8kHz

ofbandwidthfrom425nAofquiescentcurrentanda

trimmedoffsetvoltagetounder300µV,theLPV81x

amplifiersprovidetherequiredprecisionwhile

minimizingpowerconsumptioninequipmentsuchas

gasdetectorsandportableelectronicdeviceswhere

operationalbattery-lifeiscritical.

Inadditiontobeingultra-low-power,theLPV81x

amplifiershaveCMOSinputstageswithfempto-amp

biascurrentsforimpedancesourceapplications.The

LPV81xamplifiersalsofeatureanegative-railsensing

inputstageandarail-to-railoutputstagethatswings

withinmillivoltsoftherails,maintainingthewidest

dynamicrangepossible.EMIprotectionisdesigned

intotheLPV81xinordertoreducesystemsensitivity

tounwantedRFsignalsfrommobilephones,WiFi,

radiotransmitters,andtagreaders.

DeviceInformation

(1)

PART

NUMBER

PACKAGEBODYSIZE

LPV811SOT-23(5)2.90mmx1.60mm

LPV812VSSOP(8)3.00mm×3.00mm

LPV8xxFamilyofNanopowerAmplifiers

PART

NUMBER

CHANNELS

SUPPLY

CURRENT

(Typ/Ch)

OFFSET

VOLTAGE

(Max)

LPV8011500nA3.5mV

LPV8022320nA3.5mV

LPV8111450nA370µV

LPV8122425nA300µV

Figure1.NanopowerCOSensorFigure2.LPV812OffsetVoltageDistribution

Product specificaties