Input stage for constant gm amplifier circuit and method
US6316995A · kind A · utility
5Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2000 |
| Grant date | Nov 13, 2001 |
| Priority date | — |
| Expiry date | Jun 2, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/72
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An amplifier input stage having a constant input gm and including first and second differential transistor pair so as to provide operation with inputs at or near the upper and lower power supply rails. A comparator circuit operates to control which of the transistor pair is active based upon the relative magnitudes of the amplifier input stage inputs and a reference voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.