Reference voltage circuit
US11662761B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2021 |
| Grant date | May 30, 2023 |
| Priority date | — |
| Expiry date | Dec 31, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/262
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A reference voltage circuit includes: a first and a second NPN transistor having a collector and a base shorted and diode-connected, the second NPN transistor having an emitter connected to a first potential node and operating at a higher current density; a first resistor connected in series with the first NPN transistor; a second resistor having one end connected to a circuit with the first NPN transistor and the first resistor connected in series; a third resistor having one end connected to the collector of the second NPN transistor; a connection point to which the other ends of the second and the third resistor are connected; an arithmetic amplifier circuit having an inverting input terminal, a non-inverting input terminal, and an output terminal respectively connected to the second resistor, the third resistor, and the connection point; and a current supply circuit connected to the collector of the first NPN transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.