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| Austriamicrosystems introduces the world's first noise canceling speaker driver chip Datd:2013-10-12 Click:1630 |
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Austriamicrosystems has announced the AS3435 and AS3415 Active Noise speaker driver chip for a new generation of zero noise stereo headphones paved the way for the development . AS3435 and AS3415 is the industry 's first bypass switch with integrated active noise reduction IC, for the manufacturer to carry out a more stylish headphones , cheap headphones designed to bring more space for free play . AS3435 is mainly used for feedback system , while the AS3415 is mainly used for feedforward systems . They are active noise reduction austriamicrosystems analog IC series of new products. This two -chip is the first high-frequency noise speaker driver, the noise floor contains the latest ultra-low -noise amplifier for the 900nV , when used in conjunction with a low -noise microphone , can offset the high frequency noise. Both chips have 35mW stereo output , 32Ω load 0.1% total harmonic distortion plus noise and greater than 110dB signal to noise ratio of these two excellent audio characteristics . This means , hi-fi equipment manufacturers available AS3435 and AS3415 born to replace the existing active noise reduction solution that enables users to get a better listening experience. Austriamicrosystems' new active noise reduction headsets cover IC also enhance the structural design . Traditional active noise canceling headphones use a mechanical switch to activate the bypass mode. When the headset 's battery is fully depleted , the user you want to continue listening to music via the audio input , you must abandon the active noise reduction function . Headphone housing and circuit board design considerations had to accommodate the needs of the mechanical switch . AS3435 and AS3415 with integrated bypass switch , from 3.5 mm audio output jack music signal can be active noise reduction chipset without any power connection. Because there is no external switch , this feature can effectively reduce the cost of materials and reduce board size , and designers in the design of the headset cover also no longer consider the needs of mechanical switches . Meanwhile , these two scenarios are simulated noise reduction chip, compared with the same digital solutions , low power consumption is usually two to three times . Noise Reduction mode , 1.5V voltage operation typically consumes only 10mW. A AAA batteries can support devices running more than 100 hours . Austriamicrosystems introduced AS3435 and AS3415 Active Noise Reduction IC , but also released an improved design tools that enable filtering web development faster and easier, to meet the acoustic headphone design features for noise reduction needs. Austriamicrosystems design tools based on Windows systems, graphical interface is simple and easy to understand , to the user's screen to display the entire signal chain , and provides a SPICE simulation module is used to run the filter structure . Furthermore , AS3435 and AS3415 added bass boost equalization capabilities , without discrete signal processing IC can achieve sound equalization . Austriamicrosystems' Active Noise Reduction products marketing manager Oliver Jones , said: "According to the active noise reduction headsets demand for industry-leading manufacturers , we use these new features together . AS3435 and AS3415 will help Headset OEM manufacturers in the future design will enhance the audio quality of the headset to new heights . " Availability AS3415 and AAS3435 active noise reduction speaker driver IC is now available samples . AS3435 uses QFN36 package , AS3415 uses QFN32 package sizes are 5mm x 5mm. |
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