Method and circuit for recycling trimmed devices
US8143993B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 29, 2009 |
| Grant date | Mar 27, 2012 |
| Priority date | — |
| Expiry date | Sep 22, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/24
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A trimmable component network of switched parallel paths is described, each path contains a component, typically a resistor, with a portion of the component bypassed by fuses. The bypassed portion represents the same percentage of the component's value for each of the trimmable components in the parallel paths. A component is measured against a specification and if the specification is not met a prescribed number of fuses are cut to bring the component within its specification. A TRIM CODE may be used to identify the specific fuses to be cut, and thus the specific fuses that are to remain intact. The same TRIM CODE is applied to the components in the parallel paths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.