High-gain operational transconductance amplifier offering improved bandwidth
US5789981A · kind A · utility
27Cited by
8References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1996 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | Apr 26, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/30129
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A high-gain, low-power transconductance amplifier suitable for use in switched-capacitor circuits provides improved accuracy and high-speed operation. The transconductance amplifier includes an input circuit that receives an input voltage. A current mirror circuit is coupled to the input circuit. At least one active cascode circuit, coupled to the current mirror circuit, receives current from the current mirror circuit and provides an output current. The active cascode circuit provides gain enhancement to the transconductance amplifier by increasing the output impedance of the transconductance amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.