Method and circuit for recycling trimmed devices
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United States of America Patent
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Mar 27, 2012
Grant Date -
Feb 3, 2011
app pub date -
Jul 29, 2009
filing date -
Jul 29, 2009
priority date (Note) -
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status (Latency Note)
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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.
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