Class-AB follower type high voltage comparator and amplifier assembly for use in e.g. embedded audio circuit, has input stages with inputs that act as differential voltage inputs of assembly

摘要

The assembly has thick gate metal oxide semiconductor (MOS) transistors that have silicon surfaces larger than that of thin gate extended drain MOS transistors. P- and N-type MOS input stages include inputs that act as differential voltage inputs of the assembly. Extended drain P-type MOS transistors (200, 201) include gates that are connected together and sources that are connected to a high voltage power supply (VDDHV).