Take the rough edges out of video-filter design

摘要

Many video applications route video-DAC- output signals through a buffer circuit, an analog-output lowpass filter, or both before sending the signals to a receiving device, such as a TV or a monitor. Before you design your next digital-video application, make sure you understand why you need these circuits in the first place and how to best use oversampling to simplify the filter design and optimize system performance.