PARENT VOTING AGREEMENT

Exhibit 10.3

P ARENT V OTING A GREEMENT

T HIS S TOCKHOLDER V OTING A GREEMENT (this “ Agreemen t ”) is made and entered into as of December 13, 2007, by and among ON S EMICONDUCTOR C ORPORATION , a Delaware corporation (“ Parent ”) (only with respect to Section 2(b) hereof), AMIS H OLDINGS , I NC . , a Delaware corporation (the “ Company ”) and the undersigned stockholder (“ Stockholder ”) of Parent.

R ECITALS

A. Concurrently with the execution and delivery hereof, Parent, Apple Acquisition Corporation, a Delaware corporation and an indirect wholly owned subsidiary of Parent (“ Merger Sub ”), and the Company are entering into an Agreement and Plan of Merger and Reorganization of even date herewith (as it may be amended or supplemented from time to time pursuant to the terms thereof, the “ Merger Agreement ”), which provides for the merger (the “ Merger ”) of Merger Sub with and into the Company in accordance with its terms ( the Merger, Merger Agreement and the transactions contemplated thereby referred to collectively as the “ Proposed Transaction ”).

B. Stockholder has sole voting power over such number of shares of each class of capital stock of Parent beneficially owned (as defined in Rule 13d-3 under the Securities Exchange Act of 1934, as amended) by Stockholder as is indicated on the signature page of this Agreement.

C. In consideration of the execution and delivery of the Merger Agreement by the Company, Stockholder desires to agree to vote the Shares (as defined herein) over which Stockholder has sole voting power so as to facilitate the consummation of the Merger.

N OW , T HEREFORE , intending to be legally bound, the parties hereto hereby agree as follows:

(a) Capitalized terms used but not otherwise defined herein shall have the meanings ascribed thereto in the Merger Agreement. For all purposes of and under this Agreement, the following terms shall have the following respective meanings:

“ Constructive Sale ” means with respect to any security, a short sale with respect to such security, entering into or acquiring an offsetting derivative contract with respect to such security, entering into or acquiring a futures or forward contract to deliver such security or entering into any other hedging or other derivative transaction that has the effect of either directly or indirectly materially reducing the economic benefits or risks of ownership.

“ Shares ” means (i) all outstanding shares of capital stock of Parent owned, beneficially or of record, by Stockholder as of the date hereof, and (ii) all additional outstanding shares of capital stock of Parent acquired by Stockholder, beneficially or of record, during the period commencing with the execution and delivery of this Agreement and expiring on the Expiration Date (as such term is defined in Section 7 below), in the case of each of clauses (i) and (ii) as to which (and only as to which) Stockholder has sole voting power; but in each case excluding shares of capital stock of Parent that, by virtue of Stockholder’s ownership of options or other convertible securities, are deemed to be beneficially owned by Stockholder pursuant to Rules 13d-3(d)(1)(i)(A) or (B) prior to the time at which Stockholder exercises such options or other convertible securities and receives the underlying capital stock of Parent.

“ Transfer ” means, with respect to any security, the direct or indirect assignment, sale, transfer, tender, exchange, pledge, hypothecation, or the gift, placement in trust, or the Constructive Sale or other disposition of such security (excluding transfers: (i) by testamentary or intestate succession, (ii) otherwise by operation of law, or (iii) under any written trading plan adopted prior to the date of this Agreement under Rule 10b5-1 of the Securities Exchange Act of 1934 as amended) or any right, title or interest therein (including, but not limited to, any right or power to vote to which the holder thereof may be entitled, whether such right or power is granted by proxy or otherwise), or the record or beneficial ownership thereof, and each agreement, arrangement or understanding, whether or not in writing, to effect any of the foregoing.

(a) At all times during the period commencing with the execution and delivery of this Agreement and expiring on the Expiration Date, Stockholder shall not, except in connection with the Merger, Transfer any of the Shares, or enter into an agreement, commitment or other arrangement with respect thereto. Notwithstanding the foregoing or anything to the contrary set forth in this Agreement, Stockholder may Transfer any or all of the Shares (i) by will, or by operation of law, in which case this Agreement shall bind the transferee, or (ii) in connection with estate and charitable planning purposes, including Transfers to relatives, trusts and charitable organizations, so long as the transferee, prior to such Transfer executes a counterpart of this Agreement (with such modifications as the Company may reasonably request solely to reflect such transfer).

(b) Stockholder understands and agrees that if Stockholder attempts to Transfer, vote or provide any other person with the authority to vote any of the Shares other than in compliance with this Agreement, Parent shall not, and Stockholder hereby unconditionally and irrevocably instructs Parent to not, (i) permit any such Transfer on its books and records, (ii) issue a new certificate representing any of the Shares or (iii) record such vote, in each case, unless and until Stockholder shall have complied with the terms of this Agreement. Each stock certificate evidencing Shares that is issued in the name of Stockholder on or after the date of this Agreement shall bear a legend indicating that such Shares are subject to the terms of this Agreement and any transferee of the Shares evidenced by the stock certificate takes the Shares subject to the terms of this Agreement.

(c) Except as otherwise permitted by this Agreement or by order of a court of competent jurisdiction, each Stockholder will not commit any act that could restrict or affect such Stockholder’s legal power, authority and right to vote all of the Shares then owned of record or beneficially by Stockholder or otherwise prevent or disable Stockholder from performing any of his obligations under this Agreement. Without limiting the generality of the foregoing, except for this Agreement and as otherwise permitted by this Agreement, each Stockholder will not enter into any voting agreement with any Person with respect to any of the Shares, grant any Person any proxy (revocable or irrevocable) or power of attorney with respect to any of the Shares, deposit any of the Shares in a voting trust or otherwise enter into any agreement or arrangement with any Person limiting or affecting Stockholder’s legal power, authority or right to vote the Shares in favor of the approval of the Proposed Transaction.

(a) Prior to the Expiration Date, at every meeting of the stockholders of Parent called, and at every adjournment or postponement thereof, and on every action or approval by written consent of the stockholders of Parent, Stockholder (in Stockholder’s capacity as such) shall appear at the meeting or otherwise cause the Shares to be present thereat for purposes of establishing a quorum and, to the extent not voted by the Persons appointed as proxies pursuant to this Agreement, vote in favor of (i) approval of the issuance of shares of Parent Common Stock in the Merger, (ii) approval of an amendment

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of the Parent’s Certificate of Incorporation to increase the number of authorized shares of Parent Common Stock by 150 million shares, and (iii) any adjournment or postponement recommended by Parent with respect to any stockholder meeting in connection with the issuance of shares of Parent Common Stock pursuant to the Merger Agreement.

(b) If Stockholder is the beneficial owner, but not the record holder, of the Shares, Stockholder agrees to take all actions necessary to cause the record holder and any nominees to vote all of the Shares in accordance with Section 3(a) .

(a) Stockholder hereby irrevocably (to the fullest extent permitted by law) grants to, and appoints, the Company and each of its executive officers and any of them, in their capacities as officers of the Company (the “ Grantees ”), as Stockholder’s proxy and attorney-in-fact (with full power of substitution and re-substitution), for and in the name, place and stead of Stockholder, to vote the Shares, to instruct nominees or record holders to vote the Shares, or grant a consent or approval or dissent or disapproval in respect of such Shares in accordance with Section 3 hereof and, in the discretion of the Grantees with respect to any proposed adjournments or postponements of any meeting of stockholders of Parent at which any of the matters described in Section 3 hereof is to be considered.

(b) Stockholder represents that any proxies heretofore given in respect of the Shares that may still be in effect are not irrevocable, and such proxies are hereby revoked.

(c) Stockholder hereby affirms that the irrevocable proxy set forth in this Section 4 is given in connection with the execution of the Merger Agreement, and that such irrevocable proxy is given to secure the performance of the duties of Stockholder under this Agreement. Stockholder hereby further affirms that