POWER OF ATTORNEY

Know all by these presents, that the undersigned hereby constitutes and appoints
each of Robert Gargus, and L. William Caraccio, or either of them signing
singly, and with full power of substitution, the undersigned s true and lawful
attorney in fact to:

(1) prepare, execute in the undersigned s name and on the undersigned s behalf,
and submit to the U.S. Securities and Exchange Commission (the SEC) a Form ID,
including amendments thereto, and any other documents necessary or appropriate
to obtain codes and passwords enabling the undersigned to make electronic
filings with the SEC of reports required by Section 16(a) of the Securities
Exchange Act of 1934 (the 1934 Act) or any rule or regulation of the SEC;

(2) execute for and on behalf of the undersigned, in the undersigned s capacity
as an officer and/or director of Applied Micro Curcuits Corporation (the
Company), Forms 3, 4, or 5 in accordance with Section 16(a) of the 1934 Act and
the rules thereunder;

(3) do and perform any and all acts for and on behalf of the undersigned which
may be necessary or desirable to complete and execute any such Forms 3, 4, or 5,
complete and execute any amendment or amendments thereto, and timely file such
form with the SEC and any stock exchange or similar authority; and

(4) take any other action of any type whatsoever in connection with the
foregoing which, in the opinion of such attorney in fact, may be of benefit to,
in the best interest of, or legally required by, the undersigned, it being
understood that the documents executed by such attorney in fact on behalf of the
undersigned pursuant to this Power of Attorney shall be in such form and shall
contain such terms and conditions as such attorney in fact may approve in such
attorney in fact s discretion.

The undersigned hereby grants to each such attorney in fact full power and
authority to do and perform any and every act and thing whatsoever requisite,
necessary, or proper to be done in the exercise of any of the rights and
powers herein granted, as fully to all intents and purposes as the undersigned
might or could do if personally present, with full power of substitution or
revocation, hereby ratifying and confirming all that such attorney in fact, or
such attorney in fact s substitute or substitutes, shall lawfully do or cause to
be done by virtue of this power of attorney and the rights and powers herein
granted.  The undersigned acknowledges that the foregoing attorney s in fact, in
serving in such capacity at the request of the undersigned, are not assuming,
nor is the Company assuming, any of the undersigned s responsibilities to
comply with Section 16 of the 1934 Act.

This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4, or 5 with respect to
the undersigned s holdings of and transactions in securities issued by the
Company, unless earlier revoked by the undersigned in a signed writing
delivered to the foregoing attorneys in fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 14th day of August, 2012.


/s/ Cesar Cesaratto
Signature

Cesar Cesaratto
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