Calibrating timing, gain and bandwidth mismatch in interleaved ADCs using injection of random pulses
US8872680B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 1, 2013 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Mar 1, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/1215
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method and a corresponding device for calibrating an interleaved analog-to-digital converter (ADC) involve injecting a pulsed, substantially-random signal into a plurality of channels in the ADC. After the substantially-random signal is injected, a gain correlation value is determined for each channel, which value indicates a degree of correlation between the injected substantially-random signal and an output of the respective channel. The gain correlation values are then compared to determine a degree of mismatch between the channels. At least one of the channels is calibrated as a function of the determined degree of mismatch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.