HI-FI Stereo Encoder / Multiplexer
The described stereo encoder utilizes the NJM2035 integrated circuit, which is specifically designed for high-fidelity audio applications. The encoder effectively modulates audio signals, ensuring that the stereo output maintains clarity and separation between channels. The inclusion of a 38 kHz quartz crystal oscillator is critical, as it stabilizes the frequency of the 19 kHz pilot tone, which is essential for proper stereo demodulation at the receiving end. This feature eliminates the need for manual calibration, thereby enhancing user convenience and reliability.
The circuit is designed to be compact, fitting comfortably onto a 1 x 1.5-inch printed circuit board (PCB). This small form factor is particularly advantageous for applications where space is restricted, such as in portable devices or integrated systems. The encoder can be seamlessly integrated with various mono FM transmitters, including models TX300 and TX500, which are designed to work in conjunction with this stereo encoder to provide enhanced audio transmission capabilities.
The NJM2035's high performance is attributed to its low distortion characteristics and high signal-to-noise ratio, making it suitable for professional audio applications. Its robust design ensures that it can handle a wide range of audio frequencies, providing an excellent solution for both amateur and professional audio engineers seeking a cost-effective method for stereo sound transmission.This stereo encoder is the perfect solution for those looking for a high quality stereo sound transmission at a low cost. This stereo encoder produces an excellent crystal clear stereo sound and very good channel separation that can match with many more expensive stereo encoders that are available on the market.
It is all possible thanks to a 38KHz quartz crystal that controls the 19kHz pilot tone, so you will never have to calibrate or re-adjust the circuit. NJM2035 offers superb quality and is manufactured by NJR CORPORATION (JRC), a subsidiary of New Japan Radio, a company that is known as the worlds best manufacturer of high end professional audio semiconductors.
This transmitter will work with any mono FM transmitter including TX300 and TX500 which are available on our website. The whole circuit may easily fit on a small 1 x 1.5 printed circuit board allowing to fit in places where space is limited.
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