Negative reference voltage generating circuit and negative reference voltage generating system using the same
US9285821B2 · kind B2 · utility
4Cited by
4References
12Claims
0Family size
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Key dates
| Filing date | Oct 14, 2014 |
| Grant date | Mar 15, 2016 |
| Priority date | — |
| Expiry date | Oct 14, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/30
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A negative reference voltage generating circuit includes a clamp-type reference voltage circuit and a differential amplifier. The clamp-type reference voltage circuit is connected between a node of a first negative voltage which is equal to or lower than the ground voltage and a node of a second negative voltage which is lower than the first negative voltage, and is formed by connecting a first circuit and a second circuit in parallel. The differential amplifier amplifies the difference between a node voltage in the first circuit and a node voltage in the second circuit, and outputs a negative reference voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.