Methods and apparatus for detecting out-of-range signals in an analog-to-digital converter
US6741194B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2002 |
| Grant date | May 25, 2004 |
| Priority date | — |
| Expiry date | Dec 23, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/44
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An analog-to-digital (A/D) converter suitable for use with redundant signed digit (RSD) coverter stages is provided with an out-of-range (OOR) detection circuit. If an out-of-range input signal is detected, the detection circuit identifies the OOR condition so that the converter can take remedial action. Examples of remedial action may include adjusting the gain of one or more converter stages, adjusting the analog input signal provided to one or more converter stages, and/or adjusting the digital output of the converter to reflect the OOR condition. The ORR detection circuit may receive its input from a converter stage that is distinct from the stage providing the most significant bit (MSB) of the digital output to preserve the resolution of the most significant bit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.