ANALOG-TO-DIGITAL CONVERTER AND SEMICONDUCTOR INTEGRATED CIRCUIT

摘要

A time-interleaved analog-to-digital converter that samples an analog input signal at a sampling frequency and converts the analog input signal into a digital output signal is enabled to perform correction processing on an error by: converting the analog input signal into the digital output signal by a plurality of analog-to-digital conversion circuits in a time-interleaved manner; and performing gain correction processing and skew correction processing with respect to the analog-to-digital conversion circuit, on the basis of a mixed signal, the mixed signal being obtained by mixing an output signal from the analog-to-digital conversion circuit with a signal made by shifting a phase of the output signal by π/2.

主权项

1. An analog-to-digital converter configured to sample an analog input signal at a sampling frequency and to convert the analog input signal into a digital output signal, the analog-to-digital converter comprising:
a plurality of analog-to-digital conversion circuits configured to convert the analog input signal into the digital output signal in a time-interleaved manner; and a correction circuit configured to perform at least one of gain correction processing and skew correction processing with respect to the analog-to-digital conversion circuit, on the basis of a mixed signal, the mixed signal being obtained by mixing an output signal from the analog-to-digital conversion circuit with a signal made by shifting a phase of the output signal by π/2.