The BA6797FP and BA6797FM are 4-channel BTL power drivers for CD players and each have an internal 5V regulator (requires attached PNP transistor). Because the input stage of each driver channel connects to an operational amplifier, and there are both positive and negative input pins, making these ICs adaptable for a wide range of inputs and greatly simplify filter configuration. In addition, the internal level shifting circuit reduces the number of external components.