现代运算放大器有某种方式的推挽式的输出级，许多也是不对称的，并且某一方向的压摆率有比其它方向的有更大的倾向。
While all modern op amps have push-pull OUTPUT stages of some sort, many are still asymmetrical, and have a greater slew rate in one direction than the other.
在输出级设计时，为了提高效率，采用了推挽共源级放大器作为输出级，输出电压摆幅基本上达到了轨至轨；
When designing output stage, in order to enhance the efficiency, it uses the push-pull common source stage amplifier as the output stage, the output voltage swing basically reached rail-to-rail.
第二，推挽A级放大器输出阶段将拥有固有拒绝电源纹波和噪声。
Second, a push-pull class A amplifier output stage will have inherent rejection of power supply ripple and noise.
应用推荐