Smallest MEMS Microphone Designed for Hearing Aid Applications Features Low Equivalent Input Noise (EIN) and Power Consumption

Tue Mar 26, 2013 8:00am EDT

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Analog Devices ADMP801 MEMS microphone delivers 27 dBA EIN, consumes only 17 µA
at 1 V supply, and is available in a 7.3 mm³ package.


NORWOOD, Mass.--(Business Wire)--
Analog Devices, Inc. (NASDAQ: ADI), a global leader in high-performance
semiconductors for signal processing applications, introduced today a high
performance MEMS microphone developed specifically for hearing aid applications.
When compared to legacy solutions like electret condenser microphones (ECMs),
the ADMP801 is not only smaller in size at only 7.3 cubic millimeters, but also
offers greater performance stability over time, temperature, and environmental
changes, produces very low equivalent input noise (EIN) at 27 dBA SPL (sound
pressure level), and consumes only 17 µA at 1Vsupply -- a fraction of the power
consumed by traditional ECMs. The ADMP801 MEMS microphone is available in a tiny
surface-mount package measuring only 3.35 mm x 2.50 mm x 0.98 mm that is
reflow-solder-compatible with no sensitivity degradation.

http://mms.businesswire.com/bwapps/mediaserver/ViewMedia?mgid=362531&vid=4
Smallest MEMS Microphone designed for hearing aid applications produces very low
EIN of 27 dBA SPL, consumes only 17 uA at 1 V supply, and is available in a 7.3
cubic millimeters package. (Photo: Business Wire)

* Download data sheet and view product page: http://www.analog.com/ADMP801
* Order samples and evaluation boards: http://www.analog.com/ADMP801
* For more information on Analog Devices healthcare solutions visit:
http://healthcare.analog.com/en/segment/health.html

"Hearing aids represent an application ideally suited for the advantages MEMS
microphones offer including small size, stability, and very low power
consumption," said Pat O`Doherty, vice president for the Healthcare Group,
Analog Devices. "However, MEMS microphones have not offered the EIN performance
levels that meet stringent hearing aid standards until now. The ADMP801 MEMS
microphone offers noise performance, package size, and phase and gain stability
that is very desirable for advanced hearing aids that incorporate beamforming to
facilitate sound or voice localization." 

More About the ADMP801 Omnidirectional MEMS Microphone

The ADMP801 is a high quality, ultralow power, analog output, bottom-ported,
omnidirectional MEMS microphone designed specifically for hearing aid
applications. It is fully pick-and-place and reflow compatible, offering an
option to save on cost using a mechanized assembly process as compared to ECMs
that require manual assembly processes. The device offers excellent
environmental and temporal stability, and multiple ADMP801 MEMS microphones can
be configured in an array to form a directional response, facilitating sound of
voice localization. 

ADMP801 Omnidirectional MEMS Microphone Key Specifications

* Microphone EIN: 27 dBA SPL 
* Current consumption: 17 µA at 1 V 
* Stable response over time and temperature 
* Package volume: 7.3 cubic millimeters

Availability and Pricing

 Product                     Sample Availability          Full Production          Price              Packaging                                              
 ADMP801                     Now                          Now                      $10.78/1K          3.35-mm × 2.50-mm × 0.98-mm surface-mount LGA package  
 EVAL-ADMP801Z-FLEX          Now                          NA                       $95 each           NA                                                     
                                                                                                                                                             


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. Analog
Devices is headquartered in Norwood, Massachusetts, with design and
manufacturing facilities throughout the world. Analog Devices is included in the
S&P 500 Index. http://www.analog.com

Follow ADI on Twitter at http://www.twitter.com/ADI_News

To subscribe to Analog Dialogue, ADI`s monthly technical journal, visit:
http://www.analog.com/library/analogDialogue/

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Analog Devices
Edie Lawlor Kramer, 781-937-1734
edie.kramer@analog.com
or
Porter Novelli
Andrew MacLellan, 617-897-8270
andrew.maclellan@porternovelli.com



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