Exhibit 12.1

Analog Devices, Inc.

Ratio of Earnings to Fixed Charges

	Fiscal Year Ended										Nine Months Ended
(In thousands, except ratios)	November 3, 2007		November 1, 2008		October 31, 2009		October 30, 2010		October 29, 2011		August 4, 2012		July 30, 2011
Determination of earnings:
Income from continuing operations before provision for taxes on income	$	661,457	$	666,102	$	297,444	$	901,665	$	1,061,447	$	601,009	$	830,447
Amortization of Capitalized interest		982		982		982		440		54		41		41
Fixed charges		1,834		1,607		5,243		11,388		19,892		23,935		13,710
Total earnings as defined		664,273		668,691		303,669		913,493		1,081,393		624,985		844,198
Fixed Charges:
Interest and amortization expense		7		81		3,853		10,226		18,892		23,187		12,891
Interest portion of rent expense		1,827		1,526		1,390		1,162		1,000		748		819
Fixed charges		1,834		1,607		5,243		11,388		19,892		23,935		13,710
Capitalized interest		—		—								—		—
Total fixed charges	$	1,834	$	1,607	$	5,243	$	11,388	$	19,892	$	23,935	$	13,710
Ratio of earnings to fixed charges		362.2		416.1		57.9		80.2		54.4		26.1		61.6