IRVINE, Calif., April 16, 2008 (PRIME NEWSWIRE) -- Microsemi Corporation (Nasdaq:MSCC), a leading manufacturer of high performance analog mixed signal integrated circuits and high reliability semiconductors, has announced a new lowest-light addition to its patented visible light sensor portfolio.

Designated the LX1973B(tm), the new sensor features an innovative dome-lens package and dark-current cancellation technology optimized for lowest light levels, making it an ideal solution for automatic brightness control in automotive displays, auto-dimming mirrors and headlamps, as well as for targeted applications in computer notebooks, LCD monitors and TVs, handheld displays, cell phones, digital cameras, kiosks and outdoor lighting.

"We designed the LX1973B to provide the most accurate and controlled response even under very low ambient light conditions," said Steve Litchfield, Microsemi Executive Vice President and Analog Mixed Signal Group President. "The LX1973B utilizes what we call Best Eye(tm) processing which provides a nearly perfect photopic light wavelength response curve."

The sensor provides a current output with a 10% accuracy maintained over the full temperature range making it ideal for those applications where a frequency output would interfere with other electronics and where the tightest control is required.

When interfaced with an 8-bit ADC, the LX1973B can detect light as low as 0.001 lux and as high as 500 lux. An integrated dark current cancellation circuit enables accurate sensing at less than 0.0005 lux @ 25 degrees Celsius. In addition, internal thermal compensation provides high accuracy over an extended temperature range, from -40 to +85 degrees Celsius.

Unlike conventional light sensors, Microsemi's patented technology requires no optical filters for ultraviolet and infrared wavelengths that extend beyond human sight. These wavelengths can confuse conventional sensors, which must use infrared filters to avoid display lighting adjustments erroneous to the human eye.

The LX1973B is lead free and contains no cadmium, as is found in many conventional light sensors.

The LX1973B is available in an 8-pin MSOP surface mount package measuring only 3 millimeters square. Package orientations are offered for both standard board mounting (package suffix IPL) and for reverse mounting (package suffix IPR). If needed, two sensors can be mounted on opposite sides of the board -- an ideal solution for applications such as auto-dimming mirrors.

In 2.5K quantities the LX1973B sensor is unit priced at $2.46. Samples and production quantities are available immediately.

Complete technical information on all Microsemi visible light sensors is available on the Microsemi web site at http://www.microsemi.com. Samples and evaluation boards can be requested through this site, from Microsemi sales representatives, or from Microsemi's distribution channel.

About Microsemi Corporation

Microsemi Corporation, with corporate headquarters in Irvine, California, is a leading designer, manufacturer and marketer of high performance analog and mixed signal integrated circuits and high reliability semiconductors. The company's semiconductors manage and control or regulate power, protect against transient voltage spikes and transmit, receive and amplify signals.

Microsemi's products include individual components as well as integrated circuit solutions that enhance customer designs by improving performance, reliability and battery optimization, reducing size or protecting circuits. The principal markets the company serves include implantable medical, defense/aerospace and satellite, notebook computers, monitors and LCD TVs, automotive and mobile connectivity applications. More information may be obtained by contacting the company directly or by visiting its web site at http://www.microsemi.com.

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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, including without limitation statements concerning our expectations regarding our business outlook, our performance and competitive position during the coming year, visibility into our customer demand, and any other statements of belief or about our plans or expectations. These forward-looking statements are based on our current expectations and are inherently subject to risks and uncertainties that could cause actual results to differ materially from those expressed in the forward-looking statements. The potential risks and uncertainties include, but are not limited to, such factors as changes in generally accepted accounting principles, the difficulties regarding the making of estimates and projections, the hiring and retention of qualified personnel in a competitive labor market, acquiring, managing and integrating new operations, businesses or assets, uncertainty as to the future profitability of acquired businesses, delays in the realization of any accretion from acquisition transactions, any circumstances that adversely impact the end markets of acquired businesses, difficulties in closing or disposing of operations or assets, difficulties in transferring work from one plant to another, rapidly changing technology and product obsolescence, difficulties predicting the timing and amount of plant closure costs, the potential inability to realize cost savings or productivity gains and to improve capacity utilization, potential cost increases, weakness or competitive pricing environment of the marketplace, uncertain demand for and acceptance of the company's products, adverse circumstances in any of our end markets, results of in-process or planned development or 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, product returns, product liability, and other potential unexpected business and economic conditions or adverse changes in current or expected industry conditions, business disruptions, epidemics, health advisories, disasters, national emergencies, wars or potential future effects of the tragic events of September 11, 2001, political instability, currency fluctuations, variations in customer order preferences, fluctuations in market prices of the company's common stock and potential unavailability of additional capital on favorable terms, difficulties in implementing company strategies, dealing with environmental or other regulatory matters or litigation, or any matters involving litigation, contingent liabilities or other claims, difficulties and costs imposed by law, including under the Sarbanes-Oxley Act of 2002, difficulties in determining the scope of, and procuring and maintaining, adequate insurance coverage, difficulties and costs of protecting patents and other proprietary rights, work stoppages, labor issues, inventory obsolescence and difficulties regarding customer qualification of products, manufacturing facilities and processes, and other difficulties managing consolidation or growth, including in the maintenance of internal controls, the implementation of information systems, and the training of personnel. 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 and all subsequent Form 10-Q reports filed by Microsemi with the SEC. Additional risk factors may be identified from time to time in Microsemi's future filings. The forward-looking statements included in this release speak only as of the date hereof, and Microsemi does not undertake any obligation to update these forward-looking statements to reflect subsequent events or circumstances.

Investor Inquiries: Robert C. Adams, Microsemi Corporation, Irvine, CA (949) 221-7100.

Microsemi Corporation
Financial Contact: 
John W. Hohener, Vice President and CFO
  (949) 221-7100
Investor Relations:
Robert C. Adams, Vice President Business Development &
 Investor Relations
  (949) 221-7100