LD168 audio voltage controlled lantern control ASIC

The typical application circuit of LD168 integrated circuit is shown in Figure 2-132. This circuit is mainly used to control the rotating light of the radio speaker box . The audio
signal from the speaker is input to the 5th pin of the integrated block through the capacitor co, and is controlled after rectification and amplification. The frequency of the voltage-controlled oscillator causes the four-way colored light LEDs 4x4 to flash cyclically, and the flashing cycle rate changes with the speaker output level .