New Class-D Amplifiers from Analog Devices Deliver Audiophile Sound Qu

    Business Editors

    NORWOOD, Mass.--(BUSINESS WIRE)--Jan. 27, 2005--

    -ADI introduces new family of Class-D amplifiers optimized with
    best-in-class audio performance and EMI reduction.

    Raising the bar for high performance in consumer audio systems, Analog Devices Inc. (NYSE: ADI) today introduced a family of audio amplifiers that will enable the design of high performance audio in the smallest possible space to resolve design challenges in consumer applications, such as HDTV, home theatre, and car stereo systems. These new amplifiers combine the space- and heat-saving advantages of Class-D amplification, with dramatic improvements in sound quality and reduced EMI (electro magnetic interference) in a one-chip solution.
    "New consumer electronics applications, especially advanced TVs, are designed as much for their aesthetic appeal as their audio/video performance. Class-D, with its inherent space and heat advantages, is a critical enabling technology in this revolution," said Dick Meaney, vice president of the precision converter group at Analog Devices. "Analog Devices' new audio amplifiers take Class-D technology to the next level without compromising sound quality. In addition, because these devices lead the industry in high performance and EMI reduction, they are the best choice for audio amplification in the demanding car stereo market."
    Developed using ADI's patent-pending Sigma-Delta technology, the devices achieve less than 0.005 percent THD (total harmonic distortion) and up to 2 x 40 Watt high output power, while reducing heat loss by 50 percent - a breakthrough in performance that is unattainable using traditional Class-D architectures.
    "Audio experts at Analog Devices devised a way to outperform competing PWM-based (pulse width modulation) Class-D schemes by using a highly-integrated single-chip design which features a 'high modulation factor' Sigma-Delta architecture, configured in a closed-loop implementation with a high power output stage," said Bob Adams, ADI fellow and manager of audio development at Analog Devices.
    Ultimately, this enables higher audio fidelity in half the space of competing devices as well as a significant reduction in EMI to meet the design requirements of next-generation electronics, such as thin flat panel TVs and multichannel surround sound car stereos.
    The AD199x amplifiers can be combined with other Analog Devices audio products, including ADCs (analog-to-digital converters), DACs (digital-to-analog converters) and CODECs, as well as its SigmaDSP(R) and SHARC(R) audio processors.

    Availability and Pricing

    ADI's new Class-D amplifiers, including the AD1990, AD1992, AD1994 and AD1996, are now sampling, with full production quantities available beginning in Spring 2005.

Part Number Output Power THD Packaging 1K Per-Unit Price ---------------------------------------------------------------------- AD1990 2 x 5 W less than0.005 percent 64-lead LFCSP (lead frame chip scale package) $2.90 ---------------------------------------------------------------------- AD1992 2 x 10 W less than0.005 percent 64-lead LFCSP $3.28 ---------------------------------------------------------------------- AD1994 2 x 25 W less than0.005 percent 64-lead LFCSP $4.42 ---------------------------------------------------------------------- AD1996 2 x 40 W less than0.005 percent 32-lead PSOP (power small outline package) $6.99 ----------------------------------------------------------------------

    For more information on any of these products, please visit: www.analog.com/(insert part number).

    About Analog Devices

    Innovation, performance, and excellence are the cultural pillars on which Analog Devices has built one of the longest standing, highest growth companies within the technology sector. Acknowledged industry-wide as the world leader in data conversion and signal conditioning technology, Analog Devices serves over 60,000 customers, representing virtually all types of electronic equipment. Celebrating 40 years as a leading global manufacturer of high-performance integrated circuits used in analog and digital signal processing applications, Analog Devices is headquartered in Norwood, Massachusetts, with design and manufacturing facilities throughout the world. Analog Devices' common stock is listed on the New York Stock Exchange under the ticker "ADI" and is included in the S&P 500 Index.
    Note to editors: SigmaDSP and SHARC are registered trademarks of Analog Devices, Inc.

--30--DC/bo*

CONTACT: Analog Devices Inc. Krys Monaco, 781-937-1945 Fax: 781-937-1026 Email: krys.monaco@analog.com OR Porter Novelli Kerry Walker, 617-897-8200 Fax: 617-897-8203 Email: kerry.walker@porternovelli.com

KEYWORD: MASSACHUSETTS INDUSTRY KEYWORD: HARDWARE TELEVISION/RADIO CABLE PRODUCT SOURCE: Analog Devices Inc.

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