Texas Instruments LPV821 Handleiding
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Current
+
VOUT
Vcc
Rshunt
R1
R3
+
Vshunt
R4
LPV821
Vbias
R2
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AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,
intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.
LPV821
SNOSD36A–AUGUST2017–REVISEDDECEMBER2017
LPV821,650nA,Precision,Nanopower,Zero-DriftAmplifier
1
1Features
1
•QuiescentCurrent:650nA
•LowOffsetVoltage:±10μV(Maximum)
•OffsetVoltageDrift:±0.096μV/°C(Maximum)
•0.1-Hzto10-HzNoise:3.9μV
PP
•InputBiasCurrent:±7pA
•GainBandwidth:8kHz
•SupplyVoltage:1.7Vto3.6V
•Rail-to-RailInput/Output
•IndustryStandardPackage
–Singlein5-pinSOT-23
•EMIHardened
2Applications
•Battery-PoweredInstruments
•GasDetection
•ProcessAnalytics
•FaultMonitoring
•CurrentSensing
–ShuntResistor
–CurrentTransformer
•TemperatureMeasurements
–HighImpedanceThermistors
–RTD's,Thermocouples
•StrainGauges
–ElectronicScales
–PressureSensors
3Description
TheLPV821isasingle-channel,nanopower,zero-
driftoperationalamplifierfor“AlwaysON”sensing
applicationsinwirelessandwiredequipmentwhere
lowinputoffsetisrequired.Withthecombinationof
lowinitialoffset,lowoffsetdrift,and8kHzof
bandwidthfrom650nAofquiescentcurrent,the
LPV821istheindustry'slowestpowerzero-drift
amplifierthatcanbeusedforendequipmentthat
monitorcurrentconsumption,temperature,gas,or
straingauges.
TheLPV821zero-driftoperationalamplifierusesa
proprietaryauto-calibrationtechniqueto
simultaneouslyprovidelowoffsetvoltage(10μV,
maximum)andminimaldriftovertimeand
temperature.Inadditiontohavinglowoffsetand
ultra-lowquiescentcurrent,theLPV821amplifierhas
pico-ampbiascurrentswhichreduceerrors
commonlyintroducedinapplicationsmonitoring
sensorswithhighoutputimpedanceandamplifier
configurationswithmegaohmfeedbackresistors.
DeviceInformation
(1)
PART
NUMBER
CHAN
COUNT
PACKAGEBODYSIZE(NOM)
LPV8211SOT-23(5)2.90mm×1.60mm
LPV822
(2)
2WSON(8)2.00mm×2.00mm
PrecisionNano-PowerAmplifierFamily
FAMILY
CHAN
COUNT
I
Q
PER
CHAN
V
OS
(MAX)V
SUPPLY
LPV8211650nA10µV1.7to3.6V
LPV8111450nA370µV1.6to5.5V
LPV8122425nA300µV1.6to5.5V
OPA3691,2800nA750µV1.8to5.5V
(1)Forallavailablepackages,seetheorderableaddendumat
theendofthedatasheet.
(2)Plannedfornear-futurerelease
Low-Side,Always-OnCurrentSense
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | LPV821 |
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