Active speaker amplifier circuit
The active speaker circuit utilizes the TDA1521 integrated circuit, which serves as the power amplifier. This IC is designed for high-efficiency amplification, providing a robust output suitable for driving speaker loads. The TDA1521 operates with a supply voltage ranging from 12V to 28V, allowing for flexibility in power supply design. It incorporates thermal protection and short-circuit protection, ensuring reliable operation under varying load conditions.
The NE5532 is employed in this circuit as a low-noise audio operational amplifier, providing high fidelity signal processing. This dual-channel op-amp is known for its excellent bandwidth and slew rate, making it ideal for audio applications. It can be configured in various ways, such as inverting or non-inverting configurations, to suit the specific requirements of the audio signal path.
In this design, the dual-channel input allows for stereo audio signals to be processed, with the NE5532 amplifying the incoming audio signals before they are fed into the TDA1521 for final amplification. The output stage of the TDA1521 drives the connected speakers, delivering clear and powerful sound reproduction.
The circuit typically includes additional passive components such as resistors and capacitors for biasing, filtering, and stability purposes. Proper layout and grounding techniques are crucial to minimize noise and interference, ensuring optimal performance of the active speaker system. Overall, this configuration is well-suited for applications requiring high-quality audio amplification in compact designs.Active speaker with amplifier circuit TDA1521 and NE5532 composed of dual-channel input dual channel output.
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