Reference-voltage generating circuit
US7026863B2 · kind B2 · utility
3Cited by
7References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 17, 2004 |
| Grant date | Apr 11, 2006 |
| Priority date | — |
| Expiry date | Sep 3, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/245
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A disclosed reference-voltage generating circuit includes a supply voltage adjusting circuit for adjusting an external supply voltage Vcc and outputting predetermined constant voltages VA and VB; a first voltage supply circuit for generating a voltage Vpn that has a negative temperature coefficient by using the voltage VA; and a second voltage supply circuit for generating a voltage Vptat that has a positive temperature coefficient by using the voltage VB, and for generating the reference voltage Vref, which does not have a temperature coefficient, by adding Vpn and Vptat and thereby canceling the temperature coefficients.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.