Voltage reference with low sensitivity to package shift
US9013231B1 · kind B1 · utility
8Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2013 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Dec 6, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/30
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In a bandgap voltage reference with low package shift, a proportional to absolute temperature (PTAT) voltage is generated using a single diode biased at two different current levels at two different times. Using the same diode for both current density measurements removes the absolute value of the base-emitter junction voltage (Vbe) and any package shift in the PTAT voltage. The bandgap voltage reference can be implemented in a single or differential circuit topology. In some implementations, the bandgap voltage reference can include circuitry for curvature correction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.