Patent ID: 11942957
Assignee: ANALOG DEVICES, INC.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method to extract interleaving gain errors of a time-interleaved analog-to-digital converter having sub-analog-to-digital converters (subADCs) to sample an analog input signal in a time-interleaved manner, the method comprising:
capturing a first data block of first output samples of a first subADC of the subADCs;
evaluating whether one or more of the first output samples meet an amplitude condition;
estimating a first power based on at least some of the first output samples of the first data block;
evaluating whether the first power meets a power condition;
qualifying, by a qualifier, whether first data block is suitable for interleaving gain error extraction;
determining to proceed with extraction of a first interleaving gain error based on a memory storing a number of previous qualifier results from the qualifier; and
estimating the first interleaving gain error based the first power and a second power estimated based on second output samples of a second subADC of the subADCs.