| 摘要 |
<p>Circuits and methods to achieve a new fully differential amplifier topology in class AB mode are disclosed. In a preferred embodiment of the disclosure the differential amplifier is driving dynamic speakers. A differential intermediate stage (M1, M2, M3, M4, M7, M8, M9, M10) combines four different feedbacks, all sharing four high impedance nodes (1, 2, 3, 4): main loop regulation feedback, common mode regulation feedback, and output stage quiescent current regulation for both differential output stage branches (M5, M6, M11, M12).</p> |
