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