Variable transconductance circuit
US7486139B2 · kind B2 · utility
0Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2006 |
| Grant date | Feb 3, 2009 |
| Priority date | — |
| Expiry date | Oct 8, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45668
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The variable transconductance circuit includes: a voltage-current conversion circuit for outputting a current signal linear with an input voltage signal; first and second MOS transistors for converting the current signal received to a square-root compressed voltage signal; and third and fourth MOS transistors for converting the square-root compressed voltage signal to a linear current signal. A bias current at the first and second MOS transistors and a bias current at the third and fourth MOS transistors are varied to control transconductance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.