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随着双层多晶硅硅栅CMOS工艺的成熟,使得集成电路的集成度迅速提高,现在已能在一块单片上,将一些MOS电容开关、运算放大器等器件一起构成开关电容滤波器.从而克服了有源,无源滤波器体积大、精度差、稳定性差及调整不方便等缺点.开关电容滤波器实质上是一种脉冲采样数据滤波器,也就是说它是一种工作在离散域中的模拟滤波器,将连续信号作离散化处理. 本文着重介绍5G6514,5G6515,5G6516,5G6517开关电容滤波器集成电路的特性和应用.
With the maturity of the double-layer polysilicon Si-gate CMOS technology, the integrated level of the integrated circuit has rapidly increased. Now it is possible to form a switched capacitor filter together with some MOS capacitor switches, operational amplifiers and the like on a single chip. Active and passive filter bulky, poor accuracy, poor stability and inconvenient adjustment, etc. Switched-capacitor filter is essentially a pulse-sampled data filter, that is to say it is a work in a discrete domain Analog filter, the continuous signal for discrete processing.This article focuses on 5G6514, 5G6515, 5G6516, 5G6517 switched capacitor filter IC features and applications.