Output buffer is realized by the feedback application of amplifier which can drive big load capacitor. 单位增益缓冲器是具有驱动大负载电容能力的运算放大器的反馈应用,该运算放大器的增益大于70db,相位裕度大于70度。
The other is Active-RC filter used in RF receiver, it utilizes folded cascode operational amplifier. In order to improve stability of active filter, buffer and miller effect capacitor are added. 另一种是应用于射频接收机的Active-RC滤波器,其中的运算放大器采用折叠式共源共栅结构,使用了缓冲器和密勒效应电容进行频率补偿,提高了滤波器的稳定性。