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线性集成电路的设计与线性分立电路的主要差别差别主要在于某些电路元件,特别象电容、电感和高值电阻,要做成集成形式花费太在。将一个元件做成集成形式的代价正比于它所占的硅片面积。典型的小信号晶体管约占0.016平方毫米,在这样大的硅片面积上,我们仅能做几微微法的电容或2K欧的电阻。超过这个数值。电容或电阻相应变得比晶体管还贵。于是,在线性集成电路中,常采用晶体管结构以代替高值电阻,电路设计成级间直接耦
The main difference between a linear integrated circuit design and a linear discrete circuit is that some circuit components, particularly capacitors, inductors, and high value resistors, are too expensive to make in an integrated form. The cost of making an element integrated is proportional to the area of the silicon it occupies. Typical small signal transistors account for about 0.016 square millimeters, in such a large area of the silicon, we can only do a few picofarads of capacitance or 2K ohm resistance. Exceed this value. The capacitance or resistance accordingly becomes more expensive than the transistor. So, in the linear integrated circuit, often adopt the transistor structure instead of the high value resistance, the circuit is designed as direct coupling between the stages