Amplifier with feedback having high power supply rejection
US5365199A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 2, 1993 |
| Grant date | Nov 15, 1994 |
| Priority date | — |
| Expiry date | Aug 2, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/301
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A class A amplifier (20) includes an amplifier (21), a capacitor (22), and an output stage (23). The output stage (23) includes a source-follower transistor (24) and a feedback circuit (25). The source-follower transistor (24) receives an analog signal from the amplifier (21) and provides a corresponding output signal to a load. The feedback circuit (25) provides current feedback to maintain a relatively constant drain current in the source-follower transistor (24). The class A amplifier (20) with the feedback circuit (25) provides high current drive capability with low quiescent power consumption, high power supply rejection, high voltage gain, and stable operation without the use of a Miller compensation capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.