Operational transconductance amplifier (OTA)
US7786803B2 · kind B2 · utility
1Cited by
8References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 2009 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | May 11, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45626
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Apparatus and methods provide an operational transconductance amplifier (OTA) with one or more self-biased cascode current mirrors. Applicable topologies include a current-mirror OTA and a folded-cascode OTA. In one embodiment, the self-biasing cascode current mirror is an optional aspect of the folded-cascode OTA. The self-biasing can advantageous reduce the number of biasing circuits used, which can save chip area and cost. One embodiment includes an input differential pair of a current-mirror OTA.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.