High-performance, low-noise MEMS microphone
February 14, 2012 // Paul Buckley
Analog Devices, Inc. (ADI) has introduced the high-performance ADMP504 featuring the industry’s lowest-noise MEMS microphone. Delivering an SNR (signal-to-noise ratio) of 65-dBA, or 29-dBA EIN (equivalent input noise), the ADMP504 provides the same SNR performance as an array of two individual 62-dB SNR microphones. In addition, the ADMP504 provides an extended frequency response up to 20 kHz and a high PSR (power-supply-rejection) of 70 dBV.
The ADMP504 addresses the demanding requirements found in many industrial, professional audio and video conferencing applications. The new microphone applies ADI’s patented MEMS technology and audio signal processing expertise and is available in a thin 3.35 mm × 2.50 mm × 0.88 mm surface-mount package.
Global shipments of MEMS microphones rose to 1.3 billion units in 2011, up 82 percent from 704 million in 2010 driven primarily by handsets, according to IHS.
The ADMP504 is a surface-mount MEMS microphone that is reflow-solder-compatible with no sensitivity degradation. The sensitivity specification of -38 dBV is well suited for many codecs and discrete signal chain components. The high SNR of 65 dBA, or 29-dBA EIN, enables far-field audio-capture applications, as well as those using multi-microphone beam-forming algorithms. Low current consumption of <180 μA (typ) with a power supply voltage of 1.6 V to 3.3 V extends battery life for portable applications.
The ADMP504 packaged in a 3.35-mm × 2.50-mm × 0.88-mm surface-mount LGA, is available now, and is in production.
Breakthrough for really cost-efficient fuel cells in sight?
July 27, 2015
Researchers from Georgia Institute of Technology have developed a manufacturing technique for platinum nanocages that can ...
Pelican makes lay-offs, refocuses on depth sensing
SK Hynix starts 3D NAND flash production
Analog design and the age of digital correction
Apple, Nike settle Fuelband fitness tracker lawsuit
Eight percent of Europe’s electricity now supplied by wind energy
July 27, 2015
The European Commission's Joint Research Centre (JRC) has reported that EU’s grid connected cumulative capacity in 2014 reached ...
'Heartbeat car' displays driver's pulse on biometric bodywork
Smart meters can destabilize grid, study says
PCBs with embedded RFID get UL certification
- Test environment for the positioning elements of wearable devices
- Automotive Circuit Protection using Littelfuse Automotive TVS Diodes
- Top 5 Challenges for testing Today's Consumer Electronics
- Critical Requirements in High Speed Signal Generation Applications
InterviewGlobalfoundries' CEO on why FD-SOI and why now
With its latest news Globalfoundries Inc. has not only confirmed itself as a supporter of the fully-depleted silicon-on-insulator (FD-SOI) approach to IC manufacturing but that it also thinks sufficiently ...
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Novelda is giving away two full XeThru Inspiration kits worth 1499 US Dollars each, for EETimes Europe's readers to experiment first hand with its XeThru technology.Based on the use of radio waves, rather than infrared, ultrasound or light, the company's X2M1000 Inspiration modules can detect presence just from the chest movement while breathing, and measure both the rate and... MORE INFO AND LAST MONTH' WINNERS...
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.