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Amplifiers Promise Desirable Sound, Sleek Style for Advanced Audio Systems

Tue, 01/10/2012 - 8:59am
class d audio amplifierSTMicroelectronics has introduced a high-performance, analog class-D audio amplifier with desirable power density. This achievement will allow equipment manufacturers to combine exceptional audio quality with a small form factor in next-generation home and professional sound systems and active-speaker applications. The amplifiers offer 320 W of total output power – 160 W on each channel - on an area of 100 mm2. The device’s high-current capability not only delivers high output power, but also enables the design of platform solutions where the speaker impedance can be simply changed - from 8 Ohms down to 2 Ohms - without any power or current limitation. Other features that increase audio quality in the final application include built-in suppression of pop/click noises, standby and mute functionality, and balanced input for best TDMA (Time Division Multiple Access) noise rejection. The device embeds smart current protection, which recognizes when the speaker requires a peak of current for a specific frequency range and automatically prevents any interruptions in the sound flow.

The TDA7498E amplifier offers flexible audio-system configuration, in both stereo and mono modes, and also includes the mono parallel feature for driving the subwoofer/woofer channel in 2.1 sound set-ups. The device exhibits a signal-to-noise ratio of 100dB and provides four selectable, fixed-gain settings at 23.8dB, 29.8dB, 33.3dB and 35.8dB.

ST’s TDA7498E dual-BTL (Bridge Tied Load) class-D audio amplifier with a single power supply is sampling now and volume production is scheduled for February 2012, with unit pricing at $6 for volumes in the range of 1,000 pieces. If your company has a high-volume need, please contact your ST sales office.

STMicroelectronics
716-532-2234, www.st.com
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