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序言增益为无限大的理想的运算:放大器,其运算精度仅取决于外部(?)路。在输入误差允许达到几毫伏的应用场合,单块集成电路运算放大器是可以达到目的的。在本文中提及的单块集成电路运算放大器HA-2900,其所有精度指标比过去的单块运算放大器约提高了100倍。具有最佳直流特性的斩波型稳零放大器大体上已有三十年的历史了。其初期是由真空管和机械斩波器构成的。最近已做出了微型组件和混合组件。如单块放大器也能达到
The prologue gain is an infinite ideal operation: an amplifier whose accuracy depends only on the external (?) Path. In applications where input errors allow a few millivolts, a single IC op amp can accomplish this goal. The monolithic integrated circuit op amp HA-2900 referred to in this article has all the precision specifications about 100 times greater than the monolithic op amps of the past. Chopper-type, stabilized-zero amplifiers with best dc characteristics have been around for almost three decades. The initial stage is composed of a vacuum tube and a mechanical chopper. Recently miniature and hybrid components have been made. Such as a single amplifier can be achieved