TPA3140D2PWPR

TPA3140D2PWPR application field and working principle

The TPA3140D2PWPR is a stereo-input class-D amplifier that operates on a single power supply from 4.5V to 26.4V. Typical applications include automotive infotainments, portable audio players, home theater sound systems. This device offers low distortion, low idle current, high efficiency and it supports a wide range of input signal.

The working principle of this amplifier is the same as other class-D amplifiers. There are two channels, left and right. First the audio signal enters the amplifier and its signal is converted from an analogue signal to a pulse-width modulated (PWM) signal by the modulator. This PWM signal is then amplified and filtered. Finally, the signal passes through the output filter before it exits to the load.

The output of the TPA3140D2PWPR is protected against fault conditions such as over-temperature, over-current and output over-voltage. It also includes an Automatic Shutdown Mode which shuts off the amplifier when the signal is absent or during EEPROM programming. In addition, it has a Down-dash Scaling circuit which reduces the gain by 6dB when clipping occurs.

The amplifier offers advanced features such as high-efficiency, low idle current and low-distortion which makes it suitable for many applications. Its signal-to-noise ratio is 110 dB, which is higher than most Class-D amplifiers. Its high efficiency results in lower power dissipation, making it suited for battery-powered applications. Moreover, the amplifier has integrated circuits (IC) which simplify the design of its output filter.

In summary, the TPA3140D2PWPR is a stereo-input class-D amplifier which operates on a single power supply from 4.5V to 26.4V. It provides efficient and low-distortion amplification and it has integrated circuits which simplify the design of its output filter. It is suitable for numerous applications due to its low-distortion, low idle current, high efficiency and wide range of input signal.