TPA4861DRG4

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The TPA4861DRG4 is a high-performance, low-noise audio amplifier, which finds a wide range of applications in the field of linear audio. It is designed to deliver superior audio amplification performance while maintaining a low overall power budget. The device is capable of driving up to 1 watt into 4 ohms with low distortion, and is suitable for use with low-impedance headphones or speakers.

The amplifier features a very low shutdown current of 0.8mA and can be used in a wide range of applications. It utilizes a high-efficiency, high-performance Class-D design, which decreases the part count and increases its power efficiency. The circuit is also designed with a low-noise operational amplifier and an easily adjustable gain control for optimal noise suppression.

The heart of the amplifier is its work principle which is known as pulse ratio modulation. This is basically a method of modulation where the average value of the signal is determined by the amount of time the signal is in the active state. In this method, the output is variable and the amplitude can be adjusted in linear mode. This is done by adjusting the amplitude of the signal in the active and inactive states, which results in a variable output.

The TPA4861DRG4 is also designed with overcurrent protection, thermal shutdown, and power-off protection. It has dual-channel output-voltage matching capability and can be adjusted to drive two speakers or headphones. The amplifier features a low-distortion output that is suitable for use in a wide range of audio applications, including mobile audio, home theater systems, and gaming audio.

Overall, the TPA4861DRG4 is a high-performance, low-noise audio amplifier capable of delivering superior audio performance while maintaining a low overall power budget. The device is designed with a high-efficiency, high-performance Class-D design, utilizes pulse ratio modulation for optimal noise suppression, and features overcurrent protection, thermal shutdown, and power-off protection. Its dual-channel output-voltage matching capability makes it suitable for a wide range of audio applications.

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