LA3370 PLL FM Stereo Demodulator For FM Car Radios

The LA3401 is an MPX integrated circuit designed for FM car stereo applications. It features a non-adjustable voltage-controlled oscillator (VCO), a noise elimination function, and a pilot cancellation function. The device is housed in a 16-pin single in-line package (SIP) and is manufactured by Sanyo Semiconductor Corporation.

The LA3401 integrated circuit is engineered to enhance the audio quality in FM car stereo systems by providing essential functionalities that improve signal reception and processing. The non-adjustable VCO allows for stable frequency generation, which is critical for maintaining audio fidelity during FM transmission. This feature ensures that the circuit can reliably tune into the desired radio frequency without the need for manual adjustments, making it user-friendly and efficient.

The skip noise eliminating function is particularly valuable in environments with fluctuating signal strength, as it helps to minimize unwanted noise that can disrupt audio playback. This function works by detecting and filtering out noise bursts that occur when the signal is weak or intermittent, thereby providing a clearer listening experience.

Additionally, the pilot cancel function is designed to eliminate the pilot tone that is often present in FM broadcasts. This pilot tone, while necessary for stereo decoding, can sometimes interfere with the audio output, especially in mono playback situations. The LA3401 effectively removes this tone, ensuring that the audio output remains clean and free from artifacts.

The 16-pin SIP package of the LA3401 facilitates easy integration into various circuit designs, promoting versatility in application. Its compact size and pin configuration allow for straightforward mounting on printed circuit boards (PCBs), making it suitable for both new designs and retrofitting existing systems.

Overall, the LA3401 serves as a critical component in enhancing FM car stereo performance, providing advanced features that contribute to superior sound quality and user satisfaction.The LA3401 is an MPX IC for FM car stereo use. It con- tains the VCO non-adjusting function, skip noise eliminat- ing function, and pilot cancel function and is packaged in a 16-pin SIP. By Sanyo Semiconductor Corporation 🔗 External reference