Integrated circuit package with external storage capacitor for improved signal quality for sensitive integrated circuit elements
US5598035A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1996 |
| Grant date | Jan 28, 1997 |
| Priority date | — |
| Expiry date | Apr 29, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A package for an integrated circuit is described. The package houses an integrated circuit with a signal quality sensitive integrated circuit element, such as a voltage controlled oscillator of a phase-locked loop. A package-mounted storage capacitor is positioned on the package body to generate a precision control signal. A signal path is constructed between the package-mounted storage capacitor and the integrated circuit to route the precision control signal to the integrated circuit. The relatively short signal path from the package-mounted storage capacitor to the integrated circuit has reduced parasitic capacitance, inductance, and resistance to maintain the quality of the precision control signal. To improve signal quality, certain portions of the signal path are electrically isolated with a shielding trace.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.