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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 T/FJpj1EmeVwbMAfGj5feHs+s3+NIblN1/qmjnHc3eJCjfX7w5lIEmOO8yHYXEBc
 yun/d9Z2KTb1N+dGDybZLQ==

<SEC-DOCUMENT>0001209191-03-020729.txt : 20030909
<SEC-HEADER>0001209191-03-020729.hdr.sgml : 20030909
<ACCEPTANCE-DATETIME>20030909140611
ACCESSION NUMBER:		0001209191-03-020729
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030905
FILED AS OF DATE:		20030909

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			DAY SHAWN P PHD
		CENTRAL INDEX KEY:			0001225979

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-49602
		FILM NUMBER:		03887696

	MAIL ADDRESS:	
		STREET 1:		C/O SYNAPTICS INCORP
		STREET 2:		2381 BERING DR
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95131

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SYNAPTICS INC
		CENTRAL INDEX KEY:			0000817720
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER PROGRAMMING SERVICES [7371]
		IRS NUMBER:				770118518
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		2381 BERING DRIVE
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95131
		BUSINESS PHONE:		4084340110

	MAIL ADDRESS:	
		STREET 1:		2381 BERING DRIVE
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95131
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?><ownershipDocument><schemaVersion>X0201</schemaVersion>    <documentType>4</documentType><periodOfReport>2003-09-05</periodOfReport><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0000817720</issuerCik><issuerName>SYNAPTICS INC</issuerName>        <issuerTradingSymbol>SYNA</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001225979</rptOwnerCik><rptOwnerName>DAY SHAWN P PHD</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1>2381 BERING DRIVE</rptOwnerStreet1><rptOwnerStreet2></rptOwnerStreet2><rptOwnerCity>SAN JOSE</rptOwnerCity><rptOwnerState>CA</rptOwnerState><rptOwnerZipCode>95131</rptOwnerZipCode><rptOwnerStateDescription></rptOwnerStateDescription></reportingOwnerAddress><reportingOwnerRelationship><isDirector>0</isDirector><isOfficer>1</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle>VP of Research and Development</officerTitle></reportingOwnerRelationship></reportingOwner><nonD
erivativeTable><nonDerivativeTransaction><securityTitle><value>Common Stock</value></securityTitle><transactionDate><value>2003-09-05</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>S</transactionCode><equitySwapInvolved>0</equitySwapInvolved><footnoteId id="F1" /></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>4000</value></transactionShares><transactionPricePerShare><value>12.15</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>80509</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></nonDerivativeTransaction></nonDerivativeTable><footnotes><footnote id="F1">Th
e shares were sold pursuant to a 10b5-1 Sales Plan dated May 30, 2003.</footnote></footnotes><remarks></remarks><ownerSignature><signatureName>Jean E. Harris, as Attorney-in-Fact</signatureName><signatureDate>2003-09-09</signatureDate></ownerSignature></ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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