Testkey detection circuit
US11348847B2 · kind B2 · utility
0Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2019 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Jun 6, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/2884
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention provides a testkey detection circuit, including a plurality of oscillators and a driving circuit. Each of the oscillators has an enable terminal, a voltage terminal and an output terminal, wherein the enable terminals are connected to a common enable terminal. The driving circuit receives the output terminals of the oscillators and increases a driving level of a selected one of the output terminals as a frequency output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.