Reference power supply circuit
US8884603B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 29, 2011 |
| Grant date | Nov 11, 2014 |
| Priority date | — |
| Expiry date | Mar 25, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/30
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A reference power supply circuit includes an adjustable resistance network and a bandgap reference power supply circuit, in which the adjustable resistance network includes a first resistor end and a second resistor end, the resistance between the first resistor end and the second resistor end varies with a process deviation; the bandgap reference power supply circuit connects the first resistor end with the second resistor end, for generating a positive proportional to absolute temperature current flowing through the first resistor end and the second resistor end and for outputting a reference voltage related to the positive proportional to absolute temperature current. The reference power supply circuit has the advantageous of high precision and good temperature drift characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.