Digitally tunable high-current current reference with high PSRR
US7385437B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Feb 11, 2005 |
| Grant date | Jun 10, 2008 |
| Priority date | — |
| Expiry date | Oct 19, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/46
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A digitally tunable low voltage CMOS current reference is disclosed. A tunable current reference circuit is provided that includes a current source circuit that is coupled to a power supply voltage. The current source circuit provides a stable current reference output regardless of fluctuations in the power supply voltage. Multiple digitally selectable inputs are included in the current reference circuit and are coupled to the current source circuit. These inputs are used to adjust a value of the current reference output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.