“典型值”---在产品说明书规范中意味着什么呢？ “Typical”—what does it mean in a data sheet specification? Bruce Trump Designers sometimes find op amp data sheet specifications perplexing because not all performance characteristics have minimum or maximum specifications. You must occasionally rely on “typical” values in the specification table or typical performance graphs. But what does typical mean? How much can it vary? There are no easy answers and it depends on the specification. Here are some guidelines on three characteristics which seem to get frequent questions: Bandwidth—The gain-bandwidth product (GBW) of an op amp is primarily controlled by the current in the input stage and the on-chip capacitance values. The variance of these two variables could mean that GBW could v……