High voltage electronic amplifiers
US5696459A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1995 |
| Grant date | Dec 9, 1997 |
| Priority date | — |
| Expiry date | Oct 23, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45141
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Novel high voltage electronic amplifiers that are capable of being monolithically integrated using low voltage semiconductor fabrication processes are described and claimed. A cascade of low voltage current mirrors is described that can act as a high voltage amplifier output circuit. A transconductor and level shift circuit is also described that can be employed in the high voltage amplifier output circuit. A high voltage current source is described and is constructed from the series combination of a low voltage transistor and a parasitic field oxide transistor. Additionally, a differential amplifier having bias-current shunting transistors is described that can be used to limit quiescent current from the output power supply of the high voltage amplifiers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.