Audio amplifier

Abstract

An audio amplifier including a differential mode integrator, a first comparator, a second comparator, a logic circuit and a driving unit is provided. The differential mode integrator receives a differential input signal and a differential output signal and outputs a differential mode intermediate signal. The first comparator has a positive input terminal receiving a first terminal signal of the differential mode intermediate signal, a negative input terminal receiving a ramp signal, and generates a first signal. The second comparator has a positive input terminal receiving a ramp signal, a negative input terminal receiving a second terminal signal of the differential mode intermediate signal, and generates a second signal. The logic circuit performs a logic operation on the first and second signals to generate a third signal and a fourth signal. The driving unit generates a differential output signal to drive a load according to the third and fourth signals.

Dependencies are inferred from the claim text.