Monolithic resistor having dynamically controllable impedance and method of manufacturing the same
US6175137A · kind A · utility
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2References
21Claims
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Key dates
| Filing date | Jul 29, 1999 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | Jul 29, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D1/47
Abstract
A variable resistor, a method of manufacturing the same and a voltage bias circuit that incorporates at least one variable resistor. In one embodiment, the variable resistor includes: (1) a substrate including a doped region having an inherent resistance, (2) a controllable switch formed in the substrate, electrically coupled to the doped region and having a control terminal and (3) a controller, coupled to the control terminal, that toggles the controllable switch to modify a current flow through the doped region and thereby vary a resistance of the variable resistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.