公开(公告)号：US10225115B1

公开(公告)日：2019-03-05

申请号：US15286432

申请日：2016-10-05

Applicant: Cadence Design Systems, Inc.

Inventor： Mathieu Gagnon ,  Santiago Luis Bortman ,  Eric Harris Naviasky ,  Guillaume Fortin ,  Julien Faucher

IPC: G06F1/12 ,  H03K5/24 ,  G11C27/02 ,  H04L25/06

Abstract: A system and a method for detecting a low-frequency periodic signal (LFPS) include at least one comparator performing a threshold comparison on an analog input signal over a period of time. A sampling circuit generates digital signals by sampling an output of the at least one comparator. A digital detection circuit applies a set of detection rules to the digital signals. The detection rules are configured to detect a presence or an absence of an LFPS based on predefined criteria concerning characteristics of the digital signals.