Figure 1. This 4-bit DAC is controlled by a 1-Wire interface. (DS2408 outputs P4 to P7 are not used.) DS2408 Chinese data pdf
DS2408 application circuit (4 channels)
Uni Directional Mic,Uni Directional Microphone,Uni Directional Dynamic Microphone,Uni Directional Condenser Microphone
NINGBO SANCO ELECTRONICS CO., LTD. , https://www.sancobuzzer.com