TDA7496L

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The TDA7496L is an integrated audio IC meant for high-powered audio device designs. It is a class-D amplifier for example for applications in a car radio installation or sound system for a home audio device. It provides very high audio fidelity, efficiency and affordability. Furthermore, it provides an excellent value for money: although its performance parameters are not quite what you would get from higher-end devices, the overall performance and output level is still very good considering the price.

The TDA7496L is capable of delivering a full 2 x 150 W output power into 4 ohm speakers or 2 x 80 W into 8 ohm speakers. The power output is generated by efficient class-D audio amplifiers, which also offer excellent audio fidelity. Apart from the built-in audio amplifier, the device also features a built-in low-dropout (LDO) regulator to support audio power supply stability. This is made possible by its built-in output stage, allowing high-power output and low-voltage operation.

The TDA7496L also has other attractive features, such as a low-power standby mode and an exceptionally wide operating temperature range of -40 to +85 °C for reliable operation in both extreme cold and hot environments. It provides protection against short circuits, over-current, and over-voltage, as well as under-voltage. Therefore, the device can continue to function normally even if there are voltage fluctuations in the power supply.

The TDA7496L is designed to meet needs of a wide array of audio applications, such as car audio systems, home audio systems, set-top boxes, and portable audio devices. Its features make it particularly suitable for use in high-powered audio systems and automobile sound systems, enabling reliable operation of sophisticated audio systems at a highly affordable price.

The TDA7496L leveraging the latest switch mode audio amplifiers available. It combines a highly efficient headphone architecture with a state-of-the-art power amplifier output stage. The switching architecture allows the device to deliver highly efficient power at reduced size, weight and harmonic distortion. In addition, the amplifier architecture is fully protected with short-circuit, over-voltage, thermal overload, and power supply protection to keep the device safe and reliable.

The working principle of the TDA7496L audio class-D amplifier is based on pulse width modulation (PWM), which is used to convert an analog input signal into a sequence of digital pulses, each pulse having an associated width, which is then used to drive an audio power stage, producing an amplified audio output signal. In the simplest implementation of this topology, the TDA7496L audio IC operates with an input signal that is applied to an RC low-pass filter, resulting in a signal that is suitable for sampling. The next stage is the peak detector and comparator, which converts the analog signal into a digital signal and is sent to the PWM block, which performs the final conversion of the signal into a digital signal. This digital signal is then sent to the output stage, which is the power amplifier, and is responsible for driving the audio output signal to the speakers.

The TDA7496L is an ideal integrated audio IC for use in a wide variety of high-fidelity audio applications. It features a highly efficient class-D audio amplifier, combined with a versatile switching architecture, and advanced power management capabilities to enable reliable operation in extreme cold and hot environments. With its wide operating temperature range, low-power standby mode, and state-of-the-art power output stage, the TDA7496L is the perfect choice for high-power audio designs.

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