AS2702-20 application field and working principle

AS2702-20 is a stereo audio source selector and mixer for various digital audio input and output applications. It is based on the high-performance Direct Digital Synthesis (DDS) technology and contains a widely compensated and optimized matched transistor ladder-based volume control circuit. The device includes a 32-bit RISC microprocessor with integrated RAM, ROM, ADC, and PWM control circuitry. AS2702-20 provides single-echo delay, dual-channel editing, high-pass/low-pass filtering, and a wide range of sound shaping tools, making it a versatile device for sound mixing, processing, and mixing. It is also suitable for use in automobiles and other applications.

The AS2702-20 uses a three-phase motor that is capable of controlling the linearity and accuracy of the volume control. The motor uses a two-pole design that ensures smooth and accurate operation. A user can control the bit rate and response of the motor using the digital potentiometer. AS2702-20 also provides a fully adjustable dual-channel limiter circuit with a maximum input level of 20dB above normal. Limiting increases the overall audio quality by reducing the presence of low-frequency noise. AS2702-20 also includes a built-in anti-aliasing filter that prevents noise from entering the system.

The output stage of the AS2702-20 is a fully balanced Class D amplifier with complementary MOSFETs. This stage provides clean and uncolored audio reproduction. To ensure the highest quality of audio reproduction, the amplifier is designed to provide minimal distortion and a wide frequency response. In addition, the amplifier is designed with a low-noise, high-current output-stage architecture. The device also features a low power management and instantaneous slew-rate compliant power supply, accounting for its efficiency.

The AS2702-20 also provides a variety of on-board features, including cross-feedback control, auto-panning, balance and level adjustment, and a dedicated stereo subwoofer output. The device is further equipped with two independent balanced and unbalanced inputs, two independent channels of stereo effects, and an intuitive graphical user interface. The device also provides analog inputs for external audio sources such as subwoofers, guitars, and keyboards. Additionally, AS2702-20 includes an OLED display for real-time audio monitoring and control.

In conclusion, AS2702-20 is a highly versatile audio source selector and mixer for a variety of digital audio applications. It is equipped with a robust set of audio processing capabilities and a user-friendly interface. The device is well-suited for automotive applications, as well as for home theater, studio, and professional sound reinforcement. The device is designed to provide smooth, accurate, and reliable operation, and its user-friendly control panel makes it easy to navigate and control.