Low voltage bipolar transconductor circuit with extended dynamic range
US6271725A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1999 |
| Grant date | Aug 7, 2001 |
| Priority date | — |
| Expiry date | Aug 25, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45472
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A low voltage bipolar transconductor circuit with extended dynamic range is disclosed. The transconductance circuit provides a differential current output signal and generally comprises a first and a second differential pair of transistors coupled to a differential input signal and to a load, and having transistors area ratios of 1:r and r:1, respectively. The transconductance circuit further comprises at least one first pair of diodes having positive nodes coupled to each other and to the load, negative nodes coupled to the first differential transistors, and a diode area ratio of r:1, and a least one second pair of diodes having positive nodes coupled to each other and to the load, negative nodes coupled to the second differential transistors, and having a diode area ratio of 1:r.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.