EV_ICS-52000-FX - InvenSense

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AN‐000001

I2S/TDMOutputMEMSMicrophoneFlexEvaluationBoards

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InvenSensereservestherighttochangethedetail

specificationsasmayberequiredtopermit

improvementsinthedesignofitsproducts.

InvenSenseInc.

1745TechnologyDrive,SanJose,CA95110U.S.A

+1(408)988–7339

www.invensense.com

DocumentNumber:AN‐000001

Revision:1.3

ReleaseDate:8/25/2016

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GENERALDESCRIPTION

ThisuserguideappliestothefollowingMEMSmicrophone

evaluationboards:

 EV_INMP441‐FX

 EV_ICS‐43432‐FX

 EV_ICS‐52000‐FX

Thesearesimpleevaluationboardsthatallowsquick

evaluationoftheperformanceoftheINMP441,ICS‐43432and

ICS‐52000MEMSmicrophones.Thesmallsizeandlowprofile

oftheflexiblePCBenablesdirectplacementofthe

microphoneintoaprototypeoranexistingdesignforanin

situevaluation.TheboardconsistsofanI2S‐output

microphonesolderedtoaflexiblePCB.Theonlyother

componentontheboardisa0.1μFsupplybypasscapacitor.

TheflexPCBisdesignedtomatetoaZIFconnectorwith

1.0mmpinspacing.TheMolex52610‐1071connectoris

includedinthekitwiththeflexPCB.TheflexPCBcanbe

matedtotheconnectorbyfirstpullingouttheconnector’s

tanclamp,insertingtheflexPCB,andthenpushingtheclamp

closed.Wirescanbesoldereddirectlytothisconnector’spins

oritcanbemounteddirectlyonarigidPCBforevaluation.It

isrecommendedtouse28AWGorsmallerwireforsoldering

tothisconnector’spins.ThePCBthicknessatthepinedgeis

0.3mm.

Theonlyfunctionaldifferencesbetweentheboardswiththe

differentmicrophonesmountedarethefunctionsofpins5and9

ontheconnector.OntheEV_INMP441‐FX,pin5istheL/R

channelselectandpin9isanactive‐highenableforthe

microphone.FortheEV_ICS‐43432‐FX,pin5isalsotheL/R

channelselectandpin9shouldbesettoground.FortheICS‐

52000,pin5istheWSoutputandpin9shouldbesettoVDD.All

pinfunctiondescriptionsaredescribedin.

TABLE1.PINFUNCTIONDESCRIPTIONS

Wire

ColorMicrophonePinDescription

1GND Ground

2SD Serialdigital outputsignal forI2Sor

TDMinterface

3SCK SerialclockforI2SorTDMinterface

4WS WordselectforI2SorTDMinterface

5L/R (INMP441,ICS‐

43432)

Left/rightchannelselect

WSO (ICS‐52000) WSOutput

6GND Ground

7VDD Powersupply(1.8‐3.3Vand 2mA

maximum)

8GND Ground

9 CHIPEN(INMP441)

CONFIG(ICS‐43432)

Chipenable:SettoGND

CONFIG(ICS‐52000)SettoVDD

10 GND Ground

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EVALUATIONBOARDCIRCUIT

Figure1andFigure2showtheschematicsoftheevaluation

boards,andFigure4andshowtheflexboardlayouts.See

therespectivemicrophonedatasheetsforcomplete

descriptionsandspecificationsofthemicrophones.

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Figure1.EV_INMP441‐FXEvaluationBoardSchematic

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Figure2.EV_ICS‐43432‐FXEvaluationBoardSchematic

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Figure3.EV_ICS‐52000‐FXEvaluationBoardSchematic

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Figure4.EV_INMP441‐FXEvaluationBoardLayout(TopView)

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Figure5.EV_ICS‐43432‐FXandEV_ICS‐52000‐FXEvaluationBoard

Layout(TopView)

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Figure6.EvaluationBoardDimensionsinMillimeters

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VDD

INMP441

SCK

CHIPEN

L/R

SCK

CHIPEN

0.1µF

L/R

GND

PIN9

GND

VDD

ICS‐43432

SCK

CONFIG

SCK

CONFIG

0.1µF

L/R

GND

VDD

ICS‐52000

SCK

CONFIG

WSO

SCK

CONFIG

0.1µF

WSO

GND

VDD

ICS-43432

1.0mm

11.0mm

6.6mm

17.5mm

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EVALUATIONBOARDPHOTOGRAPHS

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Figure7.EV_INMP441‐FXTopView

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Figure8.EV_INMP441‐FXFlexPCBwithMolexZIFConnector

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Figure9.EV_INMP441‐FXBottomView

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Figure10.EV_ICS‐43432‐FXandEV_ICS‐52000‐FXTopView

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REVISIONHISTORY

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RevisionDateRevisionDescription

07/23/20141.2InitialRelease

8/26/20161.3AddeddocumentationforEV_ICS‐52000‐FX

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COMPLIANCEDECLARATIONDISCLAIMER

InvenSensebelievestheenvironmentalandothercomplianceinformationgiveninthisdocumenttobecorrectbutcannot

guaranteeaccuracyorcompleteness.Conformitydocumentssubstantiatingthespecificationsandcomponentcharacteristicsareon

file.InvenSensesubcontractsmanufacturing,andtheinformationcontainedhereinisbasedondatareceivedfromvendorsand

suppliers,whichhasnotbeenvalidatedbyInvenSense.

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ThisinformationfurnishedbyInvenSenseisbelievedtobeaccurateandreliable.However,noresponsibilityisassumedby

InvenSenseforitsuse,orforanyinfringementsofpatentsorotherrightsofthirdpartiesthatmayresultfromitsuse.Specifications

aresubjecttochangewithoutnotice.InvenSensereservestherighttomakechangestothisproduct,includingitscircuitsand

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responsibilityforanyclaimsordamagesarisingfrominformationcontainedinthisdocument,orfromtheuseofproductsand

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maskworkand/orotherintellectualpropertyrights.

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