TDA7387

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TDA7387 Application Field and Working Principle

The TDA7387 is an integrated amplifier designed for the automotive audio system. It belongs to the class of linear amplifiers and is best known for its audio capabilities. This IC can operate in Mono, stereo or bridge-tied load mode. TDA7387 is used in a variety of applications from in-car audio systems, home theaters and audio PAs. It is also ideal for replacing car radio amplifiers, home audio amplifiers, and sound mixer amplifiers.

The TDA7387 is an integrated circuit that requires a power supply of 8V to 18V and a standby voltage of 5V. This amplifier is based on the BTL (bridge-tied load) configuration. In this configuration, the amplifier is able to provide power to the speaker at differential levels. This means that the output of the amplifier will be independent of the speaker\'s impedance and therefore the power of the amplifier will remain constant.

The TDA7387 is equipped with three bridge-tied load connected channels, each capable of delivering up to 33 watts of power. This works together with the integrated circuits of the driver and pre-amplifiers. The driver amplifier boosts the signal from the radio to a level that can be directly amplified, and the pre-amplifier then processes this signal. The result of this combination is a power amplifier that provides enhanced audio with low THD and high output power levels.

The TDA7387 is also an efficient amplifier. It has a high efficiency of up to 85 percent and therefore can deliver high power with minimum heat dissipation. It also operates with a low quiescent current of 9mA, making it suitable for typical car audio designs. Furthermore, it is designed to be resilient to electrical noise, meaning that it is insensitive to electrical noise and interference, making it an excellent choice for car audio.

The performance of the TDA7387 is impressive. It has wide bandwidth ranging from 15Hz to 50kHz, allowing for a wide range of audio playback. The amplifier also has a wide range of gain settings from -∞ to 88dB. This enables it to amplify signals from low to high frequencies. Additionally, it has a low distortion of 0.3% at low power levels and 0.4% at high power levels, making it suitable for high-fidelity audio in car audio applications.

Overall, the TDA7387 is an excellent choice for car audio systems due to its wide range of features and its performance. It has low power consumption, low distortion, and wide bandwidth. It is resilient to electrical interference and supports a wide range of gains. The TDA7387 is an ideal solution for enhancing the sound quality of car audio systems with minimal power consumption and minimal distortion.

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