Texas Instruments ADS1018-Q1 Bedienungsanleitung

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Digital Filter

and

Interface

Oscillator

Voltage

Reference

Temperature

Sensor

Mux

PGA

12-bit

û

ADC

AIN0

AIN1

SCLK

CS

VDD

GND

DOUT/DRDY

DIN

ADS1018-Q1

0.1 F

AIN2

AIN3

3.3 V

3.3 V

3.3 V

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Reference

Design

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

ADS1018-Q1

SBAS741B–OCTOBER2015–REVISEDAPRIL2020

ADS1018-Q1Automotive,Low-Power,SPI™-Compatible,12-Bit,

Analog-to-DigitalConverterWithInternalReferenceandTemperatureSensor

1

1Features

1

•AEC-Q100qualifiedforautomotiveapplications:

–Temperaturegrade1:–40°Cto+125°C,T

A

•FunctionalSafety-Capable

–Documentationavailabletoaidfunctional

safetysystemdesign

•12-bitnoise-freeresolution

•Widesupplyrange:2Vto5.5V

•Lowcurrentconsumption:

–Continuousmode:only150μA

–Single-shotmode:automaticpower-down

•Programmabledatarate:128SPSto3300SPS

•Single-cyclesettling

•Internallow-driftvoltagereference

•Internaltemperaturesensor:

2°C(maximum)error

•Internaloscillator

•InternalPGA

•Foursingle-endedortwodifferentialinputs

2Applications

•Batterymanagementsystems

•Automotivesensors:

–Thermocouples

–Resistancetemperaturedetectors(RTDs)

–Electrochemicalgassensors

–Particulatemattersensors

3Description

TheADS1018-Q1isaprecision,lowpower,12-bit,

noise-free,analog-to-digitalconverter(ADC)that

providesallfeaturesnecessarytomeasurethemost

commonsensorsignals.TheADS1018-Q1integrates

aprogrammablegainamplifier(PGA),voltage

reference,oscillator,andhigh-accuracytemperature

sensor.Thesefeatures,alongwithawidepower-

supplyrangefrom2Vto5.5V,makethe

ADS1018-Q1ideallysuitedforpower-andspace-

constrained,sensor-measurementapplications.

TheADS1018-Q1performsconversionsatdatarates

upto3300samplespersecond(SPS).ThePGA

offersinputrangesfrom±256mVto±6.144V,

allowingbothlargeandsmallsignalstobemeasured

withhighresolution.Aninputmultiplexer(mux)allows

measurementoftwodifferentialorfoursingle-ended

inputs.Thehigh-accuracytemperaturesensorisused

forsystem-leveltemperaturemonitoring,orcold-

junctioncompensationforthermocouples.

TheADS1018-Q1operateseitherincontinuous-

conversionmode,orinasingle-shotmodethat

automaticallypowersdownafteraconversion.

Single-shotmodesignificantlyreducescurrent

consumptionduringidleperiods.Dataaretransferred

throughaserialperipheralinterface(SPI™).The

ADS1018-Q1isspecifiedfrom–40°Cto+125°C.

DeviceInformation

(1)

PARTNUMBERPACKAGEBODYSIZE(NOM)

ADS1018-Q1VSSOP(10)3.00mm×3.00mm

(1)Forallavailablepackages,seethepackageoptionaddendum

attheendofthedatasheet.

K-TypeThermocoupleMeasurement

UsingIntegratedTemperatureSensorforCold-JunctionCompensation

Produktspezifikationen