Printed circuit assembly having integrated resistors for terminating data and control lines of a host-peripheral interface
US6480020B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 1999 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | May 18, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/10689
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A printed circuit board assembly (PCBA) includes first and second integrated-circuit terminals and first and second connector terminals. A first transmission line transmits a data signal and a second transmission line transmits a clocking signal. The PCBA includes integrated circuitry comprising first and second pads, a first digital circuit for propagating the data signal through the first pad and a second digital circuit for propagating the clocking signal through the second pad. The first transmission line includes a first integrated-circuit conductive path including a first series-connected integrated circuit resistive element and a first printed-circuit conductive path. The second transmission line includes a second integrated-circuit conductive path including a second integrated-circuit resistive element and a second printed-circuit conductive path. The first resistive element has a first ohmic value, the second resistive element has a second ohmic value, the first printed circuit conductive path has a third ohmic value and the second printed circuit conductive path has a fourth ohmic value. The ratio of the third to the first ohmic value is such that the first ohmic value is…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.