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集成运算放大器最主要应用领域之一是RC有源滤波器.它在通信、仪表等模拟信号处理方面得到广泛的应用.特别是现代通信设备都向小型化发展,单片集成组件则是先决条件.RC有源滤波器,由于电阻R要占据较大面积的芯片,为集成电路的高密度性带来困难.随着MOS集成电路工艺的不断完善,证明了开关电容网络实现精密的单元模拟滤波的可能性.开关电容滤波器已引起人们广泛的注意.因为实
One of the most important application areas of the integrated operational amplifier is the RC active filter, which has been widely used in analog signal processing such as communication and instrumentation, etc. In particular, modern communication equipment has been miniaturized and monolithically integrated components are prerequisites .RC active filter, due to the resistance R to occupy a large area of the chip, the high density of the integrated circuit difficult.With the continuous improvement of MOS integrated circuit technology, it is proved that the switched capacitor network to achieve a sophisticated unit analog filter The possibility of switched capacitor filter has aroused widespread attention