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Linear-Amplifiers-Audio: TS482IQT application field and working principle

The TS482IQT is a high performance audio amplifier integrated circuit (IC) supplying 4W power into an 8Ω load. It is a quad rail-to-rail audio power amplifier operating from a single supply, exhibiting a high power and efficiency. This IC can have all of these features without degrading the audio quality, which makes it an ideal option for driving medium power audio transducers.

The TS482IQT is suitable for various audio applications such as amplifying portable audio devices, radios, car audio systems, home audio systems and amplifying loudspeakers. It is also suitable for use in low-voltage battery systems, such as rechargeable and disposable batteries. Additionally, the IC can be applied in DC-DC converters as well as SMPSs (switched-mode power supplies).

The TS482IQT is also ideal for use in small audio devices because its low supply voltage enables significant system cost savings. It is designed for stereo applications, with each channel having an independent input and output line. The IC is capable of driving up to 4W RMS into an 8Ω speaker with a +/-5V power supply.

The TS482IQT is internally protected by several features which ensure the safety of the device and its components. These features include current limiting, thermal shutdown and reverse-power protection. Moreover, the device is capable of withstanding voltage spikes up to +/-25V, making it suitable for environments with high voltage.

The Working Principle of the TS482IQT

The TS482IQT operates on the basic principle of increasing the amount of an electrical signal in order to produce more power. This is achieved by utilizing the process of amplification. In amplification, the current and voltage of an input signal is increased. The process of amplification is achieved by the application of energy from a power supply, to the input signal.

The TS482IQT comprises of two power amplifier stages for each audio channel, both of which operate in class AB mode. The output of the two stages is combined, in order to result in higher gain and higher power output. The input signal is then passed through the power amplifier stages and its current is increased, resulting in a larger output signal.

The increased current of the output signal is then passed through the output stage and converted to output voltage. The output voltage is then amplified and can be used to drive the load. The output voltage is proportional to the input voltage and the load is driven according to the input signal power requirement.

The output stage of the TS482IQT also includes several features that ensure better reliability and superior audio quality. These features include slew rate control, current limiting, clipping detection, thermal protection, and low-noise modulation.

Conclusion

The TS482IQT is a highly efficient and powerful audio amplifier IC. It is suitable for various audio applications, such as amplifying portable audio devices, radios, car audio systems, home audio systems and amplifying loudspeakers. It is capable of driving up to 4W RMS power into an 8Ω speaker with a +/-5V power supply. The TS482IQT is equipped with several features that help the device to operate reliably, while maintaining superior audio quality.

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