SunFounder ESP32 Starter Kit
Audio Amplifier Module contains a HXJ8002 audio power amplifier chip. This chip is a power amplifier with low
power supply, that can provide 3W average audio power for a 3W BTL load with low harmonic distortion (under 10%
threshold distortion at 1KHz) from a 5V DC power supply. This chip can amplify audio signals without any coupling
capacitors or bootstrap capacitors.
The module can be supplied by a 2.0V up to 5.5V DC with 10mA operating current (0.6uA for typical standby current)
power source and produce a powerful amplified sound into a 3, 4, or 8 impedance speaker. This module has an improved
pop and clicks circuitry for reducing significantly the transition nose at the powering on and off moment. Tiny size
besides high efficiency and low power supplying make it applicable in widely portable and battery-powered projects
and microcontrollers.
• IC: HXJ8002
• Input Voltage: 2V ~ 5.5V
• Standby Mode Current: 0.6uA (typical value)
• Output Power: 3W (3W load) , 2.5W (4W load) , 1.5W (8W load)
• Output Speaker Impedance: 3W, 4W, 8W
• Size: 19.8mm x 14.2mm
Speaker
• Size: 20x30x7mm
5.16. Audio Module and Speaker 727
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