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Press release Box-ID: 366307

ams AG Tobelbader Strasse 30 8141 Premstaetten, Austria https://ams.com
Contact Ms Ulrike Anderwald +43 3136 5005856
AG
ams AG

austriamicrosystems announces Class G and Class H Stereo Headphone Amplifiers with industry's lowest power consumption

AS3560/3561 dramatically extend music playback time while maintaining excellent audio performance

(PresseBox) ( Unterpremstaetten, Austria, )
austriamicrosystems (SIX: AMS), a leading global designer and manufacturer of high performance analog ICs, has announced the AS3560 and AS3561 Stereo Headphone Amplifiers for mobile phones, portable navigation devices, music / media players and any media device that uses headphones. These new 30 mW headphone amplifiers continuously adjust the supply rails in response to the input signal, thus drastically minimizing power consumption as compared to traditional Class AB amplifiers.

The AS3560 is a Class G amplifier while the AS3561 extends the power savings even more with a Class H topology. Class G topology switches between 3 power rails, while the Class H adapts the power rail to whatever power is needed to drive the headphone volume. Both devices use differential line inputs to minimize the effects of ground noise and EMI susceptibility, and also feature low quiescent current of 1 mA with both channels enabled. The shutdown current is extremely low at less than 5 ?A.

Audio performance remains excellent with >100 dB SNR @ 1 Vrms and THD of 0.02 % at 16 ?, making the AS3560/AS3561 the best such devices available for power consumption and audio performance. The integrated charge pump generates a symmetric negative supply for true ground output signal levels, which saves space and minimizes system cost by eliminating the need for bulky and expensive DC blocking capacitors. An I2C bus allows volume control with 32 gain steps as well as independent channel control.

"Class G gives you all the benefits of a linear headphone driver in terms of sound quality, while minimizing the power loss", commented Oliver Jones, austriamicrosystems' Marketing Manager for Audio products. "This topology is without doubt the most efficient way to drive a headphone for cost vs. performance. But Class H goes even further, squeezing every last minute out of the battery."

The AS3560 and AS3561 are available in a 16ball 1.6x1.6 mm WL-CSP package and are priced at $0.95 for the AS3560 and $0.98 for the AS3561 for 1000 piece quantities. Both operate over a temperature range of -30 to +85 °C.

For further information on the Stereo Headphone Amplifiers or to request samples, please visit www.austriamicrosystems.com/audio-amplifiers

ams AG

austriamicrosystems is a leading designer and manufacturer of standard and customized highperformance analog ICs in the areas of power management, sensors & sensor interfaces and mobile infotainment. Complemented by its full service foundry services, the company focuses on the communications, industrial & medical and automotive markets. austriamicrosystems leverages almost 30 years of expertise in low power and high accuracy to provide industryleading products, operating worldwide with more that 1,000 employees with its own stateoftheart manufacturing and test facilities. austriamicrosystems is listed on the SIX Swiss Exchange in Zurich (ticker symbol: AMS). For more information, visit www.austriamicrosystems.com

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The publisher indicated in each case is solely responsible for the press releases above, the event or job offer displayed, and the image and sound material used (see company info when clicking on image/message title or company info right column). As a rule, the publisher is also the author of the press releases and the attached image, sound and information material. The use of information published here is generally free of charge for personal information and editorial processing. Please clarify any copyright issues with the stated publisher before further use. In case of publication, please send a specimen copy to service@pressebox.de.