Audio amplifier
US7786796B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 4, 2009 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | Mar 19, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/45475
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.