TDA7387EP

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TDA7387EP is an OP-AMP IC that plays an important role in Linear - Amplifiers - Audio. It is a four-channel audio power amplifier designed for TV and monaural applications. The device features a low-cost, simplified audio power amplifier sub-system, ideal for low-cost consumer and industrial applications.

The device provides four integrated power amplifier outputs, which can be connected to a speaker terminal, or directly to four 8 ohm speakers in parallel. The volume control is achieved via a Slide Pot or RCA jack. An external mute is provided for external remote control.

TDA7387EP features built-in protections, including output short circuit protection pre-turn on diagnostics, internally laid-out thermal shutdown, and C-MOS bi-directional static current control. The four speakers have balanced thermal protection and therefore can safely work under temperatures up to +140 degrees Celsius. In addition, the device has low output noise and ripple rejection. The device is pin and functionally compatible with TDA7386EP.

The device consists of 4 audio power amplifiers, each having its own built-in power supply. In addition, the device has dedicated pre-stability filters and has built-in wide band compensation. The device further includes a signal-to-noise ratio of usually more than 100 dB. The audio amplifiers are designed for low-noise and low-THD operation.

The overall power gain of the TDA7387EP is between 60dB and 84dB. The device provides a supply voltage range from 6V to 8V and a quiescent current of at least 2mA. It features an output voltage swing of 4V. The device is protected against over-current, over-voltage, and thermal overload. It also features an adjustable gain via external components.

The working principle of TDA7387EP is based on the current-mode amplifier. This is achieved by injecting a current, through a resistor and capacitor, into the input of the amplifier. This current creates a voltage at the output of the amplifier and the resulting output waveform is proportional to the input signal. The impact of the current source is to increase the efficiency of the amplifier, thereby reducing power dissipation.

TDA7388EP application field is wide. It can be used in TVs, stereos, radios, and home entertainment systems. It is suitable for midrange audio applications and can be used in multi-channel speaker systems. It is also suitable for automotive applications in car radios, PAs, speakers, and subwoofers. Finally, it can be used in medical applications such as telesurgery.

In conclusion, TDA7387EP offers a low-cost and easy to use solution for audio power amplification. The device integrates four power amplifier channels in one package, allowing for multi-channel audio applications. It has high efficiency, low noise, and low ripple rejection. Finally, it is suitable for a broad range of applications, including TVs, stereos, home entertainment systems, and automotive applications.

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