BD5423EFS-E2 Integrated Circuits (ICs)

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Linear - Amplifiers - Audio: BD5423EFS-E2 application field and working principle

The BD5423EFS-E2 is an audio linear amplifier that is used in automotive power-amplifier stages and home stereo systems. This amplifier offers high efficiency and smaller surface noise than previous linear amplifiers. It has a maximum output power of 300W/channel and an input sensitivity of 0.2V/1W. This amplifier also features a wide voltage range of 10-36V, providing superior power efficiency compared to other similar products.

The BD5423EFS-E2 is a Class-AB power amplifier with a 3-step protection function. It has a Protection Switch circuit that automatically senses over-voltage and over-temperature, and will activate the power-down circuit when any of these signals are detected. It also has an Over-Driver detection circuit that will cause the amplifier to shut down when the driver compensation circuit is overloaded. Moreover, it has an Output Over-Current circuit that will shut down the amplifier when an over-current is detected.

The BD5423EFS-E2 is based on a linear, oscillator-based modulation principle. This means that the signal is directly applied to the signal amplifier, which produces a voltage-controlled oscillator signal. This signal is then modulated by the input signal to produce the output signal. This method ensures that the resulting output is of high fidelity, with little distortion.

This amplifier also features high speed transient response and improved low-end performance. It utilizes a differential input stage and high-performance transistors to provide a low-impedance output and high and low frequency response for accurate performance. Additionally, this amplifier uses a regulating circuit that keeps the gain and output level stable with high accuracy over a wide range of power supply conditions.

In conclusion, the BD5423EFS-E2 is a linear amplifier offering superior audio performance and efficient power delivery. Its features include 3-step protection, oscillator-based modulation principle, high speed transient response, improved low-end performance, and a regulating circuit. This amplifier is ideal for a wide range of automotive and home audio applications.

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