公开(公告)号：US20190288672A1

公开(公告)日：2019-09-19

申请号：US16157165

申请日：2018-10-11

Applicant: MEDIATEK Inc.

Inventor： Tien-Yu LO ,  Chan-Hsiang WENG ,  Patrick Cooney ,  Tsung-Kai KAO ,  Stacy HO

IPC: H03H17/04

Abstract: The invention provides an anti-aliasing filter (AAF) for discretization at a sampling period. The AAF may include an operational amplifier having an input terminal and an output terminal, a first capacitor coupled between the input terminal and the output terminal, a second capacitor, and a first switch coupled between the first capacitor and the second capacitor. During a first phase, the first switch may conduct the second capacitor to the first capacitor. During a second phase, the first switch may stop conducting the second capacitor to the first capacitor. The first phase may last for one said sampling period.