Exhibit 12.1

Analog Devices, Inc.

Ratio of Earnings to Fixed Charges

	Fiscal Year Ended
	Oct. 30,		Oct. 29,		Nov. 3,		Nov. 2,		Nov. 1,		Oct. 31,
(In thousands, except ratios)	2010		2011		2012		2013		2014		2015
Determination of earnings:
Income from continuing operations   before provision for taxes on income	$	901,665	$	1,061,447	$	813,533	$	815,323	$	729,345	$	810,114
Amortization of Capitalized interest	440		54		54		54		54		54
Fixed charges	11,388		19,892		32,529		32,223		35,973		28,191
Total earnings as defined	913,493		1,081,393		846,116		847,600		765,372		838,359
Fixed Charges:
Interest and amortization expense	10,226		18,892		31,525		31,585		35,055		27,368
Interest portion of rent expense	1,162		1,000		1,004		638		918		823
Fixed charges	11,388		19,892		32,529		32,223		35,973		28,191
Capitalized interest	—		—		—		—		—		—
Total fixed charges	$	11,388	$	19,892	$	32,529	$	32,223	$	35,973	$	28,191
Ratio of earnings to fixed charges	80.2		54.4		26.0		26.3		21.3		29.7