Texas Instruments ADS7042 Handleiding

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AVDD

OPA_AVDD

V

IN+

AINP

AINM

GND

AVDD

Device

OPA_AVSS

+

R

C

+

±

Actual Device Size

1.5 x 1.5 x 0.35(H) mm

1

.

5

mm

1

.

5

mm

RUG (8)

AVDD used as

Reference for device

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Reference

Design

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

ADS7042

SBAS608C–JUNE2014–REVISEDDECEMBER2015

ADS7042Ultra-LowPower,Ultra-SmallSize,12-Bit,1-MSPS,SARADC

1

1Features

1

•Industry'sFirstSARADCwithNanowattPower

Consumption:

–234µWat1MSPSwith1.8-VAVDD

–690µWat1MSPSwith3-VAVDD

–69µWat100kSPSwith3-VAVDD

–Lessthan1µWat1kSPSwith3-VAVDD

•Industry'sSmallestSARADC:

–X2QFN-8Packagewith2.25-mm

2

Footprint

•1-MSPSThroughputwithZeroDataLatency

•WideOperatingRange:

–AVDD:1.65Vto3.6V

–DVDD:1.65Vto3.6V(IndependentofAVDD)

–TemperatureRange:–40°Cto125°C

•ExcellentPerformance:

–12-BitResolutionwithNMC

–±1-LSB(Max)DNLandINL

–70-dBSNRwith3-VAVDD

––80-dBTHDwith3-VAVDD

•UnipolarInputRange:0VtoAVDD

•IntegratedOffsetCalibration

•SPI™-CompatibleSerialInterface:16MHz

•JESD8-7ACompliantDigitalI/O

2Applications

•Low-PowerDataAcquisition

•Battery-PoweredHandheldEquipment

•LevelSensors

•UltrasonicFlowMeters

•MotorControl

•WearableFitness

•PortableMedicalEquipment

•HardDrives

•GlucoseMeters

3Description

TheADS7042isa12-bit,1-MSPS,analog-to-digital

converter(ADC).Thedevicesupportsawideanalog

inputvoltagerange(1.65Vto3.6V)andincludesa

capacitor-based,successive-approximationregister

(SAR)ADCwithaninherentsample-and-holdcircuit.

TheSPI-compatibleserialinterfaceiscontrolledby

theCSandSCLKsignals.Theinputsignalis

sampledwiththeCSfallingedgeandSCLKisused

forconversionandserialdataoutput.Thedevice

supportsawidedigitalsupplyrange(1.65Vto3.6V),

enablingdirectinterfacetoavarietyofhost

controllers.TheADS7042complieswiththeJESD8-

7AstandardforanormalDVDDrange(1.65Vto

1.95V).

TheADS7042isavailablein8-pin,miniature,leaded,

andX2QFNpackagesandisspecifiedforoperation

from–40°Cto125°C.Miniatureform-factorand

extremelylow-powerconsumptionmakethisdevice

suitableforspace-constrained,battery-powered

applications.

DeviceInformation

(1)

PARTNAMEPACKAGEBODYSIZE(NOM)

ADS7042

X2QFN(8)1.50mm×1.50mm

VSSOP(8)2.30mm×2.00mm

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

TypicalApplication

NOTE:TheADS7042issmallerthana

0805(2012metric)SMDcomponent.

Product specificaties