Calibration of digital isolators
US10942217B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2019 |
| Grant date | Mar 9, 2021 |
| Priority date | — |
| Expiry date | Aug 28, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for calibrating an isolator product includes generating a differential pair of signals on a differential pair of nodes at an input of a demodulator circuit of a receiver signal path of a first integrated circuit die of the isolator product based on a received differential pair of signals. The method includes generating a diagnostic output signal having a level corresponding to an average amplitude of the differential pair of signals. The method includes driving the diagnostic output signal to an output terminal of the isolator product. The method may include transmitting a diagnostic signal using a carrier signal having a frequency by a second integrated circuit die via an isolation channel. The method may include, during the transmitting, sweeping the frequency of the carrier signal across a frequency band. The method may include, during the sweeping, capturing the diagnostic output signal via the output terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.