Comparator diagnostic systems and methods
US11190175B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2019 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Feb 25, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/38
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An analog front-end circuit for self-calibrating a comparator, the circuit comprising a comparator in a comparator measurement path; a preamplifier coupled to the comparator by a set of switches; and an amplifier coupled to the preamplifier, the preamplifier receiving a reference signal as a first input and a user-definable reference as a second input, the user-definable reference generating a user-definable value chosen to create a known condition at an output of the preamplifier, the preamplifier determines a residual value that represents a measurement error in a signal path comprising the comparator and is used to adjust the user-definable reference value to calibrate the signal path such that threshold boundaries for the comparator can be adjusted to tighten a comparator specification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.