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Yamaha Announces Non-Clip Digital IC Amplifier
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Yamaha Corporation (TSE 1ST Section:7951) (Head office at 10-1, Nakazawa-cho, Hamamatsu-shi, Shizuoka Prefecture; President: Shuji Ito) has announced the development of the YDA144, non-clip digital IC amplifier, which can prevent distortion at times of high-level input and disconcerting sound breakup. The YDA144 is suited for optimizing sound reproduction through small speakers, such as those installed in mobile phones and laptop computers. Shipments of samples of the new IC amplifier will begin in September 1st 2006. While being a stereo digital amplifier capable of giving high sound quality without distortion when handling high input levels, the YDA144 has a small footprint, with dimensions of only 2mm x 2mm x 1mm, and emits relatively little heat.
Yutaro Nakano, marketing division manager of Yamaha's semiconductor division, summarizes the key points of the YDA144: "We anticipate strong demand for the YDA144 IC for use in mobile phones and other devices that rely on small speakers for sound reproduction. It embodies the technology and know-how that Yamaha has developed in the fields of sound creation and semiconductors. The YDA 144 is the world's first non-clip digital IC amplifier for use in mobile phones and laptop computers featuring low distortion even when handling high input levels as well as high sound quality without breakup, and low power consumption."
Because the batteries used in mobile phones can be in service for long periods of time the phones must feature low heat emission and low power consumption. Also, accompanying the rising popularity of portable music players, demand from users for substantially improved sound quality is growing,and sales are expanding of equipment with small speakers and built-in amplifiers that can be connected to speakers at home for additional enjoyment.
The small speakers incorporated in these devices have low signal input capacity, and, when amplifiers clip the signal at high sound levels, the sound reproduction becomes distorted and may break up, while the durability of the speakers may be impaired. To deal with these issues, Yamaha has developed non-clip digital amplifier technology that embodies clip-prevention functions incorporated into the digital amplifier circuit design. The internal circuitry monitors the digital amplifier output continuously and, when an emerging clip is detected, it reduces the signal by the necessary amount on the input side.
As a result of this function, the amplifier can maintain unclipped, high-quality sound output over a wider range of signal inputs. Also, even when battery voltage declines, the YDA144 circuitry automatically compensates for this and continues to perform its ideal non-clip function, while also attaining a high rate of battery utilization. |
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| Principal Features of the YDA144 |
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Non-clip function that prevents clipping even with high input levels |
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Stereo digital amplifier, featuring a small footprint and low heat emission |
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Function to reduce "popping" noise |
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Thermal protection function |
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Superior low-distortion, low-noise features thanks to a negative feedback (NFB) circuit
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For further information, please contact
Yamaha Corporation
Public & Investor Relations Group,
Public Relations Division
Mr. Mike Tanaka
TEL +81-3-5488-6601
FAX +81-3-5488-5060
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