The time error estimate device, the error amendment device and A/D

摘要

PROBLEM TO BE SOLVED: To precisely estimate a sampling time error of an A/D conversion part in A/D conversion in a time interleaving manner with simple constitution.;SOLUTION: A time error estimation device of a time interleaving A/D converter which outputs a plurality of digital output signals, obtained by performing A/D conversion by a plurality of A/D conversion part respectively in different timing, from a plurality of output terminals is configured to estimate sampling time errors of the plurality of A/D conversion parts, and includes a correlator which finds a correlation value representing similarity between the plurality of digital output signals, and a weight adder which estimates the sampling time errors of the plurality of A/D conversion parts on the basis of a result obtained by adjusting the weight of the correlation value with a differential value of output signals of the plurality of A/D conversion parts.;COPYRIGHT: (C)2013,JPO&INPIT