The following figure shows the schematic diagram of a typical Bluetooth speaker design. The main components are:
(1) The receiving module adopts the OVC Bluetooth module, and the advantage is that the cost of the solution compared with the CSR is cheap;
(2) The power amplifier IC selects the HT6809, and its unique anti-shaping distortion function ensures that the speaker does not have obvious breakage at the same time as the high-power output;
(3) The TP4055 is more common in the market for charging management;
(4) In addition, LM358 is mainly used for balance and secondary amplification of Bluetooth signals.
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