Exhibit 99.3

Silicon Laboratories Inc.

Unaudited Reconciliation of GAAP to Non-GAAP Financial Measures

(in thousands)

Pro forma condensed consolidated statements of income are included as Exhibit 99.2 to this Current Report on Form 8-K.  This Unaudited Reconciliation of GAAP to Non-GAAP Financial Measures reconciles GAAP financial measurements to non-GAAP financial measurements, in each case on the pro forma basis described in Exhibit 99.2.  The non-GAAP financial measurements provided in this Exhibit 99.3 do not replace the presentation of Silicon Laboratories’ GAAP financial results.  This Exhibit 99.3 merely provides supplemental information to assist investors in analyzing Silicon Laboratories’ results of operations; however, these measures are not in accordance with, or an alternative to, GAAP and may be different from non-GAAP measures used by other companies.  Silicon Laboratories has chosen to provide this information to investors because it believes that such supplemental information enables them to perform meaningful comparisons of past, present and future operating results, and as a means to highlight the results of core ongoing operations.

 

 

Year Ended
December 30, 2006

 

GAAP revenues

 

$

464,597

 

Aero product lines adjustment

 

(176,441

)

Non-GAAP revenues

 

$

288,156

 

 

 

 

 

GAAP operating income

 

$

29,115

 

Aero product lines adjustment (including $8.4 million of stock compensation expense)

 

(23,063

)

Stock compensation — retained business

 

31,029

 

In-process R&D — retained business

 

2,600

 

Headquarters relocation costs

 

2,956

 

Non-GAAP operating income

 

$

42,637

 

 

 

 

 

Non-GAAP operating income %

 

14.8

%