10-MHz 60-dB dynamic-range 4th-order butterworth lowpass filter

D. Cheung, K. Bult, A. Buchwald
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引用次数: 9

Abstract

A 4th-order Butterworth lowpass continuous-time filter, based on transconductance-C integrators, for applications in the videofrequency range is presented. Fabricated in a standard 0.8µm CMOS technology (MOSIS HPCMOS26G), the circuit occupies an area of 0.59mm2, including the automatic tuning circuitry, and dissipates 40- mW from a single 5V supply. A simple transconductor is utilized, which provides good linearity and high-speed properties. Experimental results of a 10-MHz, 60-dB dynamic-range, lowpass filter are given.
10mhz 60db动态范围四阶巴特沃斯低通滤波器
提出了一种应用于视频范围的基于跨导c积分器的四阶巴特沃斯低通连续时间滤波器。该电路采用标准的0.8µm CMOS技术(MOSIS HPCMOS26G)制造,包括自动调谐电路在内的面积为0.59mm2,单个5V电源功耗为40 mW。采用一种简单的晶体管,具有良好的线性和高速性能。给出了一个10mhz、60db动态范围低通滤波器的实验结果。
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