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The CXA1821M is an integrated circuit designed for compact disc players. This IC includes an Automatic Power Control (APC) circuit along with RF, focus error, and tracking error amplifiers for 3-spot optical pickup output. It also supports voltage-converted optical pickup output.

The CXA1821M integrated circuit is specifically engineered to enhance the performance of compact disc players by integrating essential functionalities into a single chip. The inclusion of an Automatic Power Control (APC) circuit enables the IC to automatically adjust the power levels of the laser used in the optical pickup, ensuring optimal performance and preventing damage due to overcurrent conditions.

The RF amplifier within the CXA1821M is responsible for processing the radio frequency signals received from the optical pickup. This signal processing is critical for accurately reading the data encoded on the compact disc. The focus error amplifier is designed to detect deviations in the focus of the laser beam, allowing for real-time adjustments to maintain precise focus on the disc surface. Similarly, the tracking error amplifier ensures that the laser remains aligned with the track being read, preventing skips or data loss during playback.

Furthermore, the 3-spot optical pickup output capability enhances the reading accuracy by utilizing multiple spots to read data simultaneously, which can improve the overall reliability and speed of data retrieval. The support for voltage-converted optical pickup output allows the IC to interface with various optical pickup designs, making it versatile for different compact disc player implementations.

Overall, the CXA1821M integrates critical functions for compact disc playback, improving efficiency and reliability in the reading process while simplifying the design requirements for manufacturers.The CXA1821M is an IC developed for compact disc players. This IC incorporates an APC circuit and RF, focus error, and tracking error Amplifiers for 3- spot optical pickup output. (The voltage-converted optical pickup output is supported. ) By Sony Electronics 🔗 External reference