Audio_8002D_Demo

Board situation: The power supply interface can use USB C 6P terminals or 2.54mm pin header sockets (compatible with curved angles and right angles); the signal can use two 2.54mm pin header sockets (compatible with curved angles and right angles). The input can also be 3.5 mm headphone cable connection; the amplified signal is output through the 2P 22.54mm pin header socket (compatible with angled and right angles); the board has a power indicator light;
 
working principle: two-channel audio signals, each through 8002D (single channel, Class AB, bridge audio power amplifier) ​​for amplification.
 
Actual use: At normal temperature, use a 5V power bank to power the phone, connect the 3.5mm headphone cable to the Xiaomi Note9 Pro mobile phone, load two speakers (4Ω, 3W), and release the audio signal. In conventional film and television works, the current is about 20mA. The audio quality is okay, and the audio signal can be clearly amplified without obvious noise.