一、线路简述在满足稳定度和线性度的要求下尽量选用较简单的线路,故此处采用差分放大和宽频放大构成的直接耦合式直流放大器作积分器。积分放大器的线路如图1所示。由Q_1、Q_2组成的差分放大级联同Q、Q_9温度补偿恒流源一起构成了一般称为长尾差分对的输入级。Q_8是集电极接地的具有温度补偿作用的射极跟随器,称补偿管,Q_9是真正的恒流源。加入Q_8、 A brief description of the circuit to meet the stability and linearity of the request to try to use a relatively simple line, so here the use of differential amplification and wide-band amplifier composed of direct-coupled DC amplifier for the integrator. Integral amplifier circuit shown in Figure 1. The differential amplifier cascaded by Q_1 and Q_2 together with the Q and Q_9 temperature compensated constant current sources form the input stage, commonly known as long tail differential pair. Q_8 is collector-grounded temperature compensator emitter follower, said compensation tube, Q_9 is a true constant current source. Join Q_8,