Sigma-delta modulated amplifier
US7084799B1 · kind B1 · utility
41Cited by
9References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 13, 2005 |
| Grant date | Aug 1, 2006 |
| Priority date | — |
| Expiry date | Jun 13, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/456
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A sigma-delta modulated amplifier is disclosed that is operable to sum an input signal and a feedback signal, integrate the summed signal, asynchronously quantize the integrated signal, sample the quantized signal utilizing a pseudo-random osculating signal, and amplify the sampled signal. The amplifier enables discrete implementation of a low-cost, spread spectrum controlled, sigma delta modulated audio amplifier for spectrally pure, high efficiency, low EMI, audio power amplification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.