Analog Devices Introduces High-Performance MEMS Microphones for High-Fidelity Audio Playback, VoIP and Voice Recognition

- ADI`s iMEMS® microphones enable clearer, more intelligible voice quality
without background noise.Small, thin packaging is effective for portable
electronics.
NORWOOD, Mass.--(Business Wire)--
Many of today`s portable electronic devices are on the cusp of an audio
revolution. While in recent years designers have focused on the development of
exciting new functions, such as wireless Internet access and mobile TV
reception, advancement of audio functions has lagged behind. Analog Devices,
Inc. (NYSE: ADI), well known for delivering superior high-performance audio
signal processing technology, has created two new MEMS microphones that enable
advanced audio functions for portable electronics. These functions include
high-fidelity audio/video playback, hands free communication, and voice
recognition with built-in wind noise suppression, and TIA-920-compliance for
VoIP applications.

The new ADMP404 and ADMP405 iMEMS® microphones combine ADI`s audio signal
processing expertise with its innovative patented and patent-pending iMEMS
technology. The resulting MEMS microphones offer the industry`s highest SNR
(signal-to-noise ratio) of 62 dB A-weighted and the highest PSRR (power supply
rejection ratio) of 70 dBV with integrated high-pass filtering. End-product
manufacturers can now develop portable electronic devices that deliver clearer,
more intelligible voice quality without the background noise/hiss produced by
other microphones with lower SNR. The ADMP404 and ADMP405 are available in a
small and thin 3.35 mm × 2.50 mm × 0.88 mm surface-mount package that is
reflow-solder-compatible with no sensitivity degradation. The ADMP404 and
ADMP405 are halide-free.

Delivering a flat wideband frequency response from 100 Hz to 15 kHz on the
ADMP404 and from 200 Hz to 15 kHz on the ADMP405, these new MEMS microphones
eliminate the need for hardware filtering or advanced signal processing to
enhance audio acquisition. The ADMP405 with a 200 Hz roll-off is the industry`s
first with this capability, enabling engineers to filter wind noise or fan noise
energy at the transducer; this provides a clearer audio signal that can be more
easily conditioned with any downstream signal processing. Engineers can now move
beyond simple command and control voice recognition to full voice recognition
for hands-free, translator, and dictation applications.

"There`s a growing recognition by system designers that poor microphone
performance at the front end significantly increases requirements for downstream
audio processing. This leads to higher power consumption, higher cost and a more
complex system design," said Mark Martin, vice president, MEMS/Sensor Group,
Analog Devices. "By leveraging ADI`s proven iMEMS® and audio signal processing
technologies, these new MEMS microphones simplify designs and enable many new
high performance capabilities for portable consumer and industrial products."

More about the ADMP404 and ADMP405 iMEMS Microphones

The ADMP404 is a high quality, low cost, low power, analog output bottom-ported
omnidirectional MEMS microphone. The ADMP404 consists of a MEMS microphone
element, an impedance converter, and an output amplifier. The ADMP404
sensitivity of -38 dBV makes it an excellent choice for both near-field and
far-field applications. The ADMP404 has a high SNR of 62 dB A-weighted and flat,
wideband frequency response from 100 Hz to 15 kHz, resulting in natural sound
with high intelligibility. Low power consumption enables long battery life for
portable applications. A built-in particle filter provides high reliability. The
ADMP404 complies with the TIA-920 Telecommunications Telephone Terminal
Equipment Transmission Requirements for Wideband Digital Wireline Telephones
standard. Additionally, the ADMP405 combines these attributes with a specially
designed low-frequency 200 Hz roll-off that will reduce wind noise. Capabilities
offered by the ADMP404 and ADMP405 dramatically enhance near-field and far-field
performance while simplifying power supply design requirements and providing
designers with significantly more flexibility in board layout. ADI also offers a
full portfolio of high performance audio codecs, class D amplifiers and
processors to complete the audio signal chain.

Availability and Pricing

The ADMP404 and ADMP405 iMEMS microphones are now sampling with volume
production scheduled for June 2010. Pricing is $1.79 per unit in 1,000-unit
quantities and both products are offered in small 3.35 mm x 2.50 mm x 0.88 mm
surface mount packages. For more information, visit
http://www.analog.com/Microphones.

About Analog Devices` iMEMS Technology

As a pioneer in MEMS industry, ADI produced the first integrated iMEMS®
(integrated micro- electro-mechanical systems) accelerometer in 1991. Since
then, ADI has maintained a leadership position, remains a high-volume producer
of high performance MEMS accelerometers, gyroscopes, and inertial measurement
units and continues to be the leading supplier of airbag sensors worldwide with
shipments of more than 500 million units to date. ADI`s iMEMS products are used
in a wide range of consumer, automotive and industrial product applications. For
more information, visit www.analog.com/pr/iMEMS.

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
over 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. http://www.analog.com

iMEMS is a registered trademark of Analog Devices, Inc.

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Analog Devices, Inc.
Howard Wisniowski, 781-937-1517
howard.wisniowski@analog.com
or
Porter Novelli
Andrew MacLellan, 617-897-8270
andrew.maclellan@porternovelli.com

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