MM1434 Overview
1 15 Pin name RIN LIN Functions Input pin R Input pin L Equivalent circuit diagram 2 VREF DC reference voltage pin 3 S/Q STEREO/Q Sound Switch pin 4 FC Filter frequency control pin 5 SPC Spread control pin MITSUMI Q Xpander Processors MM1434 Pin No. When R1 is chosen 22kΩ, the operating voltage Q Xpander bees narrower. But the input dynamic range bees wider.