实用模拟电路设计技术Section1

实用模拟电路设计技术-Section1SECTION1SINGLE-SUPPLY AMPLIFIERSRail-to-Rail Input StagesRail-to-Rail Output StagesSingle-Supply Instrumentation Amplifiers1SECTION1SINGLE-SUPPLY AMPLIFIERSAdolfo GarciaOver the last several years,single-supply operation has become an increasinglyimportant requirement as systems get smaller,cheaper,and more portable.Portable systems rely on batteries,and total circuit power consumption is animportant and often dominant design issue,and in some instances,more importantthan cost.This makes low-voltage/low supply current operation critical;at the sametime,however,accuracy and precision requirements have forced IC manufacturersto meet the challenge of“doing more with less”in their amplifier designs.