Circuit starting method, control circuit and voltage reference
US10317920B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 20, 2015 |
| Grant date | Jun 11, 2019 |
| Priority date | — |
| Expiry date | Jan 20, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/30
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A circuit starting method, a control circuit and a voltage reference circuit are provided. The control circuit includes an operational amplifier circuit and a comparison control circuit, wherein the operational amplifier circuit is arranged to establish an input reference voltage (VREF_INT) and an output reference voltage (VREF_OUT) by means of an operational amplifier (EA) and an external capacitor (C); and the comparison control circuit is arranged to, when the input reference voltage (VREF_INT) and the output reference voltage (VREF_OUT) are consistent, execute a toggle operation and output an enable signal (VREF_OK) to the operational amplifier (EA) so as to shut down the operational amplifier (EA).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.