Method and system for developing low noise bandgap references
US8508211B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 12, 2009 |
| Grant date | Aug 13, 2013 |
| Priority date | — |
| Expiry date | Sep 2, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/30
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Method and system for developing low noise bandgap references. A stacked ΔVBE generator is disclosed for generating ΔVBE. The stacked ΔVBE generator includes an error amplifier configured to generate an output based on an error signal provided by a first stack of the ΔVBE generator. The first stack of the ΔVBE is coupled to a first sub-circuit and the error amplifier to form a closed loop. The first sub-circuit is coupled to a power supply and ground and configured to provide a source current between the power supply and the ground. The stacked ΔVBE generator also includes a second sub-circuit coupled to the output of the error amplifier, the first and second stacks, and the ground, as well as a second stack of the ΔVBE generator, which is coupled to the first stack and the second sub-circuit. The ΔVBE is measured at outputs of the first and second stacks and equals the sum of individual ΔVBEs of the first and second stacks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.