Dynamic error compensation in track-and-hold circuits
US6281717A · kind A · utility
8Cited by
1References
56Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1999 |
| Grant date | Aug 28, 2001 |
| Priority date | — |
| Expiry date | Dec 8, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/063
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Circuits and methods are provided that compensate for dynamic errors caused by voltage drops across a switch coupled in series with a capacitor in an electrical circuit such as a track-and-hold circuit. In such circuits, the capacitor should provide the same voltage as a signal coupled to the switch, but does not because of the switch voltage drop. The switch can be, for example, a MOSFET or more particularly a CMOS device. Dynamic errors are compensated for by measuring the voltage drop across the switch and then effectively adding the measured voltage drop to a voltage provided by the capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.