CSR recently 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, including an internal codec, minimal external components and smaller PCB footprint, to achieve the breakthrough BOM. By using BC3-MM's internal CODEC alone, the bill of materials is reduced by approximately 20%.
According to CSR, BlueCore3-Multimedia is the only Bluetooth chip available with a high quality internal stereo CODEC, achieving a SNR (Signal-to-Noise Ratio) of up to 85 dB. It also is compatible with a wide range of external CODECs. In addition, the chip requires fewer than half the external components of alterative solutions, thereby reducing costs directly through shorter assembly time and the need for fewer components to be purchased.
The new BlueCore3-MM stereo headphone reference design is now available to download from the CSR support Web site.