摘要
叙述了一种采用非易失性数字电位器的程控放大器基本原理,提出了获得廉价、高性能、多档位、无触点程控放大器的新方法,同时给出了该放大器与8051系列单片机的软件接口程序。
This paper discusses a basic princip le of programmable gain amplifier using nonvolatile digi-tally controlled potentiometer,pu ts forward new ways to acquire the pro grammable gain amplifier with low cost ,high capability ,more choices and no contact and introduces softwa re procedure between the amplifier and 8051serial monochips.
