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一、漂移的分类 在运算放大器中,通常所说的“漂移”这一名词,在大多数情况下指的是“由环境温度变化所引起的零位电压的变化”。因此,所谓低漂移运算放大器的概念就是“相对环境温度的变化零位电压变化小的运算放大器”。 上述的由环境温度变化产生的漂移叫做温度漂移,它与以下将叙述的其他漂移有区别。同样,本文叙述的温度漂移指的也是由温度变化引起的运算放大器的零位电压的变化。其用μV/℃单位表示。
First, the drift in the classification of op amps, commonly referred to as “drift” in this term, in most cases refers to “changes in the zero voltage caused by environmental temperature changes.” Therefore, the concept of a so-called low-drift op amp is “an op amp with a small variation of zero-voltage with respect to changes in ambient temperature.” The above-mentioned drift due to ambient temperature change is called temperature drift, which is different from other drift that will be described below. Similarly, the temperature drift described in this article refers to the change in zero voltage of the op amp due to temperature changes. It is expressed in μV / ° C units.