AC coupled level shifting circuit
US9941884B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2016 |
| Grant date | Apr 10, 2018 |
| Priority date | — |
| Expiry date | Aug 31, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F7/0873
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
A level shifting circuit can be used to adjust the level of the input signal to a desired output level while maintaining the duty cycle of the input signal. The level shifting circuit can include a capacitor to AC couple the input signal to an inverter that is self-biased at the threshold voltage for the inverter. The AC coupling of the input signal permits the input signal to “ride on” the threshold voltage and transition the inverter between states depending on the value of the input signal. The inverter can be biased at the threshold voltage by connecting the output of the inverter in feedback with the input of the inverter using one or more resistors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.