Silicon Laboratories Inc. Watch

from 8-K 152 pages Fifth Amendment to Credit Agreement

from 8-K 19 pages Fourth Amendment to Credit Agreement

from 8-K 142 pages Third Amendment to Credit Agreement

from 8-K 139 pages Second Amendment to Credit Agreement

from 8-K 134 pages First Amendment to Credit Agreement

from 8-K 117 pages Credit Agreement Dated as of July 31, 2012 Among Silicon Laboratories Inc., as the Borrower, the Subsidiaries of the Borrower Identified Herein, as the Guarantors, Bank of America, N.A., as Administrative Agent, Swing Line Lender and L/C Issuer, the Other Lenders Party Hereto, Wells Fargo Bank, National Association, as Syndication Agent, and Regions Bank, as Documentation Agent Arranged By: Bank of America Merrill Lynch and Well Fargo Securities LLC, as Joint Lead Arrangers and Joint Book Managers

from S-1 1 page <page> Ex. 10.13 First Amendment to Credit Terms and Conditions and Attachment Thereto This First Amendment ("Amendment") Amends That Certain Credit Terms and Conditions, ("Credit Terms and Conditions") Dated June 25, 1999, by and Between Imperial Bank ("Bank") and Silicon Laboratories, Inc. ("Borrower") and the Commitment Letter Attached Thereto Dated April 19, 1999 (The "Commitment Letter"), (Collectively Herein the Credit Terms and Conditions and the Commitment Letter Are Referred to as the "Agreement") as Follows: 1. the Last Paragraph of the Credit Terms and Conditions Is Hereby Amended in Full to Read as Follows: "The Commitment Letter Dated, December 9, 1999 as May Be Amended or Replaced, (The "Letter") Is Attached Hereto and Incorporated Herein by This Reference for Additional Terms. in the Event of a Conflict Between This Agreement and the Term of the Letter Shall Take Precedence." 2. Except as Provided Above, the Agreement Remains Unchanged. 3. This Amendment Is Effective as of December 16, 1999, and the Parties Hereby Confirm That the Agreement as Amended Is in Full Force and Effect. Silicon Laboratories, Inc. By: /S/ Navdeep S. Sooch Name: Navdeep S. Sooch Title: Chairman and Chief Executive Officer By: /S/ John McGovern Name: John McGovern Title: Chief Financial Officer Imperial Bank By: /S/ Chris Jacomino Name: Chris Jacomino Commercial Loan Officer 1