低工作电压放大器实现视频信号分配

具有工业用中最低的输出饱和特性，低压视频放大器LT6205、LT6206、LT6207、LT6550和LT6551为视频设计者提供了采用逻辑电路以降低工作电压的能力。共用电压的能力通过减小功耗和电源转换的复杂度有助于减小板面积、降低成本。
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Video Signal Distribution Using Low Supply Voltage Amplifiers
Design Note 327
Jon Munson

Introduction
Video designs are often pressed to operate on the lowest
possible rail voltages―a simple result of the trend to-
wards lower voltage logic and the advantages of sharing
supply potentials wherever possible. Video designs are
further complicated by the need to accommodate the
dynamic offset variation inherent in AC-coupled designs
as picture content varies. Traditional op amps require
relatively large amounts of output-swing headroom and
are therefore impractical for AC coupling at even 5V. Figure 1. Typical 1VP-P Video Waveform
Linear Technology offers a new family of video op amps