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Reference design for Bluetooth headsets cuts costs by 20%

Posted: 25 Jul 2005 ?? ?Print Version ?Bookmark and Share

Keywords:csr? reference design? bluetooth? stereo headphone? headphone?

Reference design offers lowest total BOMCSR plc announced the availability of a new reference design for Bluetooth stereo headphones that offers the lowest ever total bill of materials (BOM) cost for this type of product. The new design exploits several features in CSR's BlueCore3-Multimedia chip (BC3-MM), including an internal codec, minimal external components and smaller pcb footprint, to achieve the break-through BOM. By using BC3-MM's internal CODEC alone, the bill of materials is reduced by approximately 20 percent.

BlueCore3-Multimedia is the only Bluetooth chip available with a high-quality internal stereo CODEC that achieves a signal-to-noise ratio (SNR) of up to 85dB. It is also compatible with a wide range of external CODECs. Requiring fewer than half the external components of alternative solutions, the chip reduces costs by the need for fewer components and through shorter assembly time.

BC3-MM offers market-leading energy efficiency by using an advanced on-chip Digital Signal Processor (DSP) which greatly reduces the power consumption of the headphones. It uses half the power of alternative solutions based on general-purpose RISC microprocessors, meaning that product designers can use cheaper, smaller and lighter batteries, while maintaining the same extended battery life demanded by customers.

The new design offers many leading edge features including support for MP3 streaming. MP3 streaming improves audio quality and reduces power consumption in music players such as the Apple iPod or the latest mobile phones with integrated hard disk drives. By incorporating CSR's stable headset software, currently used in 85 percent of all Bluetooth headsets, the reference design offers the ability to make and receive calls as well as play music.

The new BlueCore3-MM stereo headphone reference design is now available to download from the company's support Website.

- Janine Love

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