Bluetooth MP3 Placa Del Receptor de Audio BLT 5,1 MH-MX28 Tipo-c Lossless Decodificador Placa Del Receptor de Audio Inalámbrico Módulo de Sonido Estéreo

Features:
1.Newly upgraded Type-C interface;
2.Low power Bluetooth design scheme, supporting the latest Bluetooth 5.1 transmission, and dual channel stereo lossless playback;
3.After the module is connected to Bluetooth, it can quickly realize Bluetooth wireless transmission, which is very convenient;
4.In an open environment, the Bluetooth connection distance can reach 20 meters;
5.Widely used in various Bluetooth audio reception, various audio DIY modification, etc.

Parameters:
No. Pin Description
1 5V power supply positive 5V
2 GND power supply cathode
3 VBAT lithium battery cathode 3.7-4.2V
4 L left channel output
5 R right channel output
6 AGND audio ground
1. Power supply: Type-C 5V can be directly used for power supply, or another 5V power supply or 3.7V lithium battery can be connected (as shown in the figure below). Note that the power supply interfaces of 5V and 3.7V are different. The 5V voltage is connected to 5V and GND, and the 3.7V lithium battery is connected to VBAT and GND.
2. Audio output: The headset can be directly connected to the 3.5mm audio interface or wired for the audio input of the power amplifier board (the interface L/R/AGND shown in the figure can be directly wired).
matters needing attention:
Signal interference: The Bluetooth antenna is extremely vulnerable to high-frequency or strong electromagnetic signal interference, and it should be placed as far away from wireless devices as possible. And the board shall not be close to metal objects, and a certain distance shall be kept.
If there is a current noise on the power amplifier board, which is caused by the interference of the ground wire, it is recommended that the Bluetooth module output terminal should not use the plug wire, and the wire should be soldered, especially the ground wire. The wire should not be too long, the shorter the better, and the thicker the wire should be. For the problem of audio grounding at the power amplifier board grounding point, it needs to be connected to the ground of the audio input terminal of the power amplifier. This grounding point can be welded at different positions to achieve the lowest current sound. It is recommended that the Bluetooth and power amplifier board be powered separately, and the Bluetooth ground and power amplifier ground should be isolated.
As this product is designed as a bare board, do not touch the components on the board with your hands as much as possible, which may lead to static electricity killing the chip and causing burning.

Package include:
1 * module