Class hd power amplifier
AssigneeAnalog Devices Technology
InventorsDan Li, Hui Shen, Yang Pan
Life of this patent
Estimating the term…
Abstract
A multi-level amplifier including a converter circuit being supplied with a supply voltage and operable to generate at least two output voltages, a voltage comparator circuit adapted to compare each of the output voltages with the supply voltage to generate a driving signal, and an amplifier circuit being supplied with an analog input signal, the amplifier circuit including an analog-to-digital converter coupled to a power stage driver and power stage, wherein the power stage driver receives the driving signal from the voltage comparator.
Claims22
A multi-level amplifier, comprising:
- a converter circuit being supplied with a supply voltage and operable to generate at least two output voltages;
- a voltage comparator circuit adapted to compare each of the output voltages with the supply voltage to generate a driving signal;
- and
- an amplifier circuit being supplied with an analog input signal, the amplifier circuit including an analog-to-digital converter coupled to a power stage driver and power stage,
- wherein the power stage driver receives the driving signal from the voltage comparator.
A multi-level amplifier, comprising:
- a converter circuit being supplied with a supply voltage and operable to generate at least two output voltages;
- a controller circuit being supplied with an analog input signal and the supply voltage, the controller including a magnitude detector coupled to a first analog to digital converter, and a voltage comparator circuit adapted to compare each of the output voltages with the supply voltage to generate a driving signal;
- and
- an amplifier circuit being supplied with an analog input signal, the amplifier circuit including a second analog-to-digital converter coupled to a power stage driver and power stage,
- wherein the power stage driver receives the driving signal from the voltage comparator.
Dependencies are inferred from the claim text.