TDA7492PE

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The TDA7492PE is a 50W + 50W dual BTL class-D audio amplifier with an innovative topology. It is based on the I2S Phillips technology and follows the I2S standard from Texas Instruments. It has been designed with very low power consumption to maximise efficiency and operate in battery powered devices. It is suitable for applications such as portable audio systems, teleconferencing systems, hands-free systems and active speakers.

The TDA7492PE audio amplifier integrated circuit utilises adaptive dynamic pop reduction technology and a full protection circuit which includes short-circuit, under-voltage, over-voltage and over-temperature features to ensure reliable performance and operation. The amplifier can deliver up to 50W of power into 8 ohm speakers at THD 1% or 25W of power to 4 ohm speakers, with a signal-to-noise ratio of 94dB.

The working principle of the TDA7492PE is based on pulse-width modulation (PWM) converter and three integrated power FETs. The overall performance of the amplifier is greatly improved by using advanced audio processor, which can produce accurate audio response even at low frequencies. The emitter-follower output stage provides very good audio power efficiency.

The TDA7492PE amplifier\'s PWM technology is equipped with an adaptive control loop for switching frequency, which ensures proper control of the output power and prevents audible switching noise. The amplifier has an adjustable gain from -28dB to 28dB. It also features differential inputs with 0.3mA voltage bias to reduce standby current consumption.

The full protection circuit also provides protection against power fault conditions such as open and short circuit protection, over temperature protection, and over current protection. It also has an over-voltage protection. The power amplifier is designed with a thermal regulation loop, allowing the amplifier to exceed datasheet performance under certain conditions.

The TDA7492PE is an ideal audio amplifier for applications such as laptops, tablets and other battery powered products. The amplifier is extremely easy to use and requires very minimal design effort. It provides high power efficiency and can improve sound quality significantly. It requires very little heat dissipation and operates with low operating temperature.

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