Frequency modulation based flash ADC
US7425915B1 · kind B1 · utility
0Cited by
9References
13Claims
0Family size
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Key dates
| Filing date | May 20, 2005 |
| Grant date | Sep 16, 2008 |
| Priority date | — |
| Expiry date | Oct 19, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/361
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An analog-to-digital converter converts a frequency-modulated signal into a digital signal. The frequency-modulated signal is supplied to multiple comparators, such as low-pass filters, which determine whether the signal falls within their frequency ranges. The outputs of the comparators are converted into a digital output signal, e.g., by fat-tree encoding. Each comparator has a differently tuned capacitive load to cause a phase delay in the input signal. When the phase-delayed and non-phase-delayed signals are supplied to a D-Flop, the phase delay is determined by whether the latch conditions are met.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.