Junction capacitor compensation for wave shaping
US5952858A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 1997 |
| Grant date | Sep 14, 1999 |
| Priority date | — |
| Expiry date | Jan 23, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/06
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method and structure for wave-shaping of digital waveforms of integrated circuit processes that do not have area efficient dielectric capacitors is disclosed. The dielectric capacitors of the prior art are replaced with a first, linearizing diode and a second diode of a wave-shaping circuit, each diode having a junction capacitance that varies with voltage applied across the diode. The first, linearizing diode is supplied with a constant current from a constant current source. A current inversely proportional to the junction capacitance of the first, linearizing diode is produced at a node defined as the connection between the constant current source and the first linearizing diode. The current at the node is supplied to the second diode to produce an output voltage of the wave-shaping circuit that is linear with respect to time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.