Description

BK3266 amp board Bluetooth V5.0 car receiver board AT change name call button switch machine AUX input

Power amplifier board size: 2.9x2.9CM

1. No DC isolation power supply: suitable for lithium battery power supply, making Bluetooth headsets

2. With DC isolation power supply: suitable for refitting speakers, power amplifiers, and vehicles to add Bluetooth function to solve common ground current sound and noise.

With call function, single-ended output, power on, the default volume is maximum.

Using TI amp TPA6132, the sound quality is better

GND, BAT: 3.7V or 4.2V lithium battery power supply

GND, VCC: 5V or 12V power supply, select according to DC isolation

OUTL, AGND, OUTR: Single-ended output, which can be directly connected to input devices such as headphones, power amplifiers, and audio.

COM: The public end of the button, the other end of the button is connected to VOL+, VOL-, PREV, NEXT (the corresponding function of the silk screen is as shown in the actual figure)

AUXD, AUXL, AUXG, AUXR: audio input,

AUXD: Audio input detection pin, input low level to switch to audio input mode.