Amoisonic Electronics Selects Microsemi Class-D Amplifiers For Power-on Board DVD Player

One of the China's Largest DVD Manufacturer Using 6-Channels, 30W(RMS) AudioMax® Solution

IRVINE, Calif.--(BUSINESS WIRE)--July 22, 2002--Microsemi Corporation (Nasdaq: MSCC), a leading manufacturer of analog and mixed signal integrated circuits, today announced that its patented AudioMAX® Class-D audio amplifier technology has been selected by Amoisonic Electronics Co. Ltd., one of the China's largest DVD manufacturer, for its new line of power-on-board DVD players which add 5.1 surround sound to traditional DVD functions..

Microsemi's broad offering of AudioMAX Class-D amplifier products provide full power audiophile performance with an efficiency that eliminates damaging heat in space-constrained designs like next- generation home theater DVD players and automotive entertainment systems. The Amoisonic DVD player designs call for 6-channel, 30W amplifier solutions.

"We're continuing to see a favorable reception from China's largest DVD manufacturers for Microsemi's AudioMAX technology in new power-on-board DVD designs," said James J. Peterson, Microsemi president and chief executive officer. "AudioMAX's extraordinary sound performance and efficiency meet their critical design requirements to address this emerging market segment," he added.

With headquarters in Xiamen, Amoisonic Electronics has been the largest manufacturer and supplier of VCRs in China for five years. The company's consumer electronics products portfolio also includes digital audio, consumer communication and IT products.

About Microsemi Class-D Audio Technology

Microsemi has been a leader in developing AudioMAX Class-D audio technology that offers a choice of compatible mono/stereo controllers and reference designs to support both single and multiple-speaker systems.

Available power of up to 150 watts delivers a full 18Hz to 20kHz bandwidth performance with typical distortion as low as (less than) 0.04%. For portable applications, single-supply operation can be as low as 7 volts.

NOTE: A digital photograph for this press release can be down-loaded from the Microsemi web site, located within the News section found on the home page.

About Microsemi

Microsemi is a leading designer, manufacturer and marketer of analog, mixed-signal and discrete semiconductors. The company's semiconductors manage and regulate power, protect against transient voltage spikes and transmit, receive and amplify signals.

Microsemi products include individual components as well as complete circuit solutions that enhance customer designs by providing battery optimization, reducing size or protecting circuits. Markets the company serves include mobile connectivity, computer/peripherals, telecommunications, medical, industrial/commercial, space/satellite and military.

More information may be obtained by contacting the company directly or by visiting its web site at www.Microsemi.com.

Please read the following factors that can materially affect Microsemi's future results.

"Safe Harbor" Statement under the Private Securities Litigation Reform Act of 1995: Any statements set forth in the news release that are not entirely historical and factual in nature are forward-looking statements. For instance, all statements of belief and expectations are forward-looking statements. Forward-looking statements are inherently subject to risks and uncertainties, some of which cannot be predicted or quantified. Potential risks and uncertainties include, but are not limited to, such factors as the difficulties regarding the making of estimates and projections, hiring and retention of qualified technical personnel in a competitive labor market, acquiring and integrating new operations or assets, closing or disposing of operations or assets, rapidly changing technology and product obsolescence, the ability to realize cost savings or productivity gains, the ability to improve capacity utilization, potential cost increases, the strength and competitive pricing environment of the marketplace, demand for and acceptance of the company's products, the results of in-process or planned development, marketing and promotional campaigns, changes in demand for products, difficulties foreseeing future demand, effects of limited visibility of future sales, potential non-realization of expected orders or non-realization of backlog, business and economic conditions or adverse changes in current or expected industry conditions, business disruptions, future effects of the tragic events of Sept. 11, customer order preferences, fluctuations in market prices of the company's common stock and availability of additional capital on favorable terms, difficulties in implementing company strategies, environmental matters, litigation, difficulties protecting patents and other proprietary rights, inventory obsolescence. In addition to these factors and any other factors mentioned elsewhere in this news release, the reader should refer as well to the factors, uncertainties or risks identified in the company's most recent Form 10-K filed on Dec. 24, 2001, the Form 10-Q filed on Feb. 13, 2002, and May 10, 2002, and the final prospectus on Form S-3 filed on June 1, 2000, each filed by the company with the Securities and Exchange Commission. The company does not undertake to supplement or correct any information in this release that is or becomes incorrect.


FINANCIAL CONTACT: David R. Sonksen
Executive Vice President and Chief Financial Officer
Tel: (949) 221-7101

EDITORIAL CONTACT: Cliff Silver
Manager, Corporate Communications
Tel: (949) 221-7112

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