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Oct 18th, 2012
Wolfson announces its first high performance top and bottom port silicon MEMS microphones with matching frequency responses
Delivers crystal-clear HD audio to consumer electronics devices.
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Wolfson Microelectronics plc has announced the introduction of the WM7121 and WM7132, Wolfson’s first high performance top and bottom port silicon analogue micro-electro-mechanical systems (MEMS) microphones with matching frequency responses, designed to deliver outstanding audio quality to a wide range of consumer electronics applications.

High Definition (HD) video is now expected as standard in most portable consumer electronic devices, and with 70% of under-18 year olds capturing video on their mobile phones every week*, the need for High Definition (HD) Audio to match the HD Video in their devices has never been greater. With a high signal-to-noise ratio (SNR) of 65dB, ultra-low distortion and matching responses across the frequency band from 10Hz to 20kHz, the WM7121 and the WM7132 deliver superior HD Audio quality and highly authentic audio recordings for a wide variety of portable applications including mobile phones, Bluetooth® headsets, navigation devices, gaming consoles and both digital still and digital video cameras.

As well their matching frequency responses, the WM7121 and WM7132 microphones also feature matching phase responses and matching sensitivity, making them ideal for stereo recording and much easier for designers to integrate into their systems.  Both devices are also available with market-leading sensitivity tolerance of ±1dB.

Eadaoin Doherty, Wolfson’s Product Line Manager for MEMS Microphones, said: “The WM7121 and WM7132 are among the first microphones in the industry to offer matching frequency responses. This feature, as well as their matching phase responses and sensitivity, ensures that these microphones are easy to integrate and result in truly authentic audio recordings and crystal-clear audio playback.”

The WM7121 and WM7132 both incorporate Wolfson’s proprietary CMOS / MEMS membrane technology, offering high reliability and high performance in a miniature, low profile package. Both parts are designed to withstand the high temperatures associated with automated flow solder assembly processes, which can often damage conventional microphones, making them ideal for high volume manufacturing.

* Data sourced from a GSM Arena online survey

The WM7121 top port package and WM7132 bottom port package are both available for sampling now.

About Wolfson Microelectronics plc
Wolfson Microelectronics plc is a global leader in the supply of high performance, mixed-signal semiconductor devices and audio solutions to the consumer electronics market. In the home, in the office and on the move, Wolfson’s innovative technology can be found at the heart of many of the world’s leading digital consumer goods, including premier hi-fi equipment, mobile phones, tablet computers, MP3 players, flat panel TVs, digital still cameras and portable navigation devices.

Wolfson is committed to the design and supply of ground-breaking audio products, including its architecture-defining audio hub solutions, silicon micro-electro-mechanical system (MEMS) microphones, power management IC’s, noise cancellation and sound enhancing solutions, all of which come together to allow Wolfson to deliver industry-leading HD audio to consumer electronics applications  This rich portfolio allows Wolfson’s global customers to better differentiate their digital consumer products and create whole new end-user experiences.

The company’s headquarters is located in Edinburgh, UK. Wolfson’s customers are located worldwide, and so is Wolfson, with design centres, sales offices, applications teams and engineering expertise across Europe, the US, Australia and Asia.

Wolfson Microelectronics plc is listed on the London stock exchange (LSE: WLF.L).

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