论文部分内容阅读
当把电压信号从高阻抗信号源传递较低阻抗纲络时,对于信号电平的大动态范围,常常须要利用一个高输入阻抗和精确地接近于1的恒定增益的电路。在属于这种电路电的有源元件当中,绝缘栅场效应晶体管有最高的输入阻抗。这种元件具有一个零温度系数的工作点,能够用来得到一个温度稳定的源极跟随器。
When transmitting a voltage signal from a high impedance signal source to a lower impedance network, it is often necessary to utilize a circuit with a high input impedance and a constant gain precisely close to 1 for the large dynamic range of the signal level. Among the active components that belong to this circuit, insulated gate field effect transistors have the highest input impedance. This component has a zero temperature coefficient of the operating point can be used to get a temperature-stable source follower.