The Mini Digital Power Amplifiers PAM8403 digital amplifier board is a 2 channel 3W, Class AB power amplifier performance with Class D amplifier efficiency. It allows the device to drive the speaker directly, requiring no low pass output filters. As a result, save the system cost and PCB area. This module operates at a voltage range from 2.5V to 5.5V or by USB supply directly. This makes it ideal for adding the audio capability to our MP3, MP4 player. PAM8403 audio amplifier offers high efficiency and high-quality sound reproduction. PAM8403 is a filter less module, as a result, it offers low Quiescent Current and low EMI. With the same no of external components, the PAM8403 digital amplifier board performs much better than class-AB amplifiers. This dual-channel stereo output with 3 w + 3 w power can directly drive the 4 Ohm /8 Ohm small speakers.
. PAM8403 provides a high amplification 3W of power at efficiencies greater than 90% with both system shutdown and mute control. The mute switch used to mute the power amplifier output when the switch pressed or the mute port shorted. PAM8403 audio amplifiers are available as SOP -16 pin packages. A 0.47uf ceramic capacitor reduces the noise caused by the power supply coupling into the output drive signal. This module features low Quiescent Current, low EMI with short circuit, and thermal shutdown protection. These are also used for a long time steady usage as it features low harmonic distortion. As this 3W dual audio amplifier designed with special inline architecture enhances anti-noise capability and reduces RF interference.