Analog Devices (ADI) S-3ASR Automatic shelf registration

Exhibit 12.1

Analog Devices, Inc.
Ratio of Earnings to Fixed Charges
(in thousands, except ratios)

	Fiscal Year Ended										Six Months Ended
	October 30,		October 29,		October 28,		November 3,		November 1		May 3,		May 2,
	2004		2005		2006		2007		2008		2008		2009
Determination of earnings:
Income from continuing operations before provision for taxes on income	$	633,707	$	537,201	$	636,792	$	661,457	$	666,102	$	326,006	$	90,191
Amortization of capitalized interest		982		982		982		982		982		491		491
Fixed charges		1,725		1,542		2,093		1,834		1,607		815		826
Total earnings as defined		636,414		539,725		639,867		664,273		668,691		327,312		91,508
Fixed Charges:
Interest expense (a)		240		43		16		7		81		—		86
Interest portion of rent expense		1,485		1,499		2,077		1,827		1,526		815		740
Fixed charges		1,725		1,542		2,093		1,834		1,607		815		826
Capitalized interest		—		—		—		—		—		—		—
Total fixed charges	$	1,725	$	1,542	$	2,093	$	1,834	$	1,607	$	815	$	826
Ratio of earnings to fixed charges		368.9		350.0		305.7		362.2		416.1		401.6		110.8

(a) Interest expense includes amortization of capitalized debt issue costs.