来自ADI公司的电话记录中奇怪但真实的故事。问题:为什么驱动ADC的差分放大器的实际输出电压与我们所预期的不一样?回答:这可能与您选择的差分放大器的类型有关。当我们检查客户的原理图时,常常发现放大器所呈现的性能实际上与客户的设计是一致的,问题仅在于对差分放大器不够熟悉。 Strange but real story from ADI’s phone records. Question: Why does the actual output voltage of the differential amplifier that drives the ADC differ from what we expected? Answer: This may depend on the type of differential amplifier you choose. When we examine the customer’s schematic, it is often found that the performance exhibited by the amplifier is actually consistent with the customer’s design, and the problem is that the problem is not so familiar with the differential amplifier.