Driver circuits with extended voltage range
US5504444A · kind A · utility
27Cited by
14References
37Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 24, 1994 |
| Grant date | Apr 2, 1996 |
| Priority date | — |
| Expiry date | Jan 24, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45141
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Novel high voltage 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 high voltage current source circuit also 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 power supply of the high voltage amplifiers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.