Simplified curvature compensated bandgap using only ratioed components
US11853096B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | Feb 25, 2022 |
| Grant date | Dec 26, 2023 |
| Priority date | — |
| Expiry date | Jul 9, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/30
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A curvature compensated bandgap circuit that is capable of matching best-in-class two (2) parts-per-million performance without over-temperature trimming. This improves performance metrics for precision voltage reference products without requiring individual device tuning during production thereof. A core bandgap circuit comprises a main operational amplifier having a second order bowed voltage response over temperature. A ptat circuit is coupled to the core bandgap circuit to provide a sigmoidal third order shape for the bandgap voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.