Mono audio amplifier IC for Hi-Fi speakers gives 13W burst output and 10x efficiency gains

March 16, 2012 // By Julien Happich
HiWave Technologies has launched a single channel audio power amplifier for the consumer and Hi-Fi market. The HiAS2001-QNC-010 delivers 13W burst and 3W continuous power output and is over 10 times more efficient at typical listening levels than comparable Class D amplifiers. The HiAS2001 uses HiWave's proprietary Audium technology to create the highly power efficient switching audio power amplifier, optimised to operate directly from a low voltage (0.8 - 1.8V) battery source.

For example, its efficient design uses just 25mW to deliver the industry standard typical listening level (68dBC at 1m); a typical Class D amplifier could consume as much as 1000mW. The device has been designed to deliver greater efficiency in both mains and battery powered speakers and remove the need for heat sinks. It also enables new speaker classes, such as truly wireless Hi-Fi speakers, to be created. A wireless speaker based on the amplifier, combined with a power-efficient wireless standard and 4 AA batteries would be capable of playing over 220 albums between charges: over four-months of playback. 

The IC comes with an auto power save mode that automatically activates when no audio input is received. It delivers 16-bit per channel audio from configurable (left and right) I2S digital inputs and supports a 44.1 to 48kHz range with automatic sample rate adaption. It further integrates an audio signal processing stage for EQ and effects; a 44-step volume control (1.5dB per step); push button, control pin and rotary (volume) inputs; a tuneable bass boost; and click / pop suppression. Sample quantities of the HiAS2001-QNC-010 are available immediately in a 64-pin QFN package

Visit HiWave Technologies PLC at www.hiwave.com