Continuous-time 4th order Butterworth low-pass filter for video frequency applications

被引:1
|
作者
Sabadell, J [1 ]
Aldea, C [1 ]
Celma, S [1 ]
Martínez, PA [1 ]
机构
[1] Univ Zaragoza, Fac Ciencias, Grp Diseno Elect, Dept Elect Engn, E-50009 Zaragoza, Spain
关键词
continuous-time 4th order Butterworth low-pass filter; CMOS; video frequency range;
D O I
10.1023/A:1011241702987
中图分类号
TP3 [计算技术、计算机技术];
学科分类号
0812 ;
摘要
In this paper, a continuous-time 4th order Butterworth low-pass filter based on current-mode processing is presented for applications over the video frequency range. A new type of integrator in which both voltage and currents may be integrated is presented and used as the main active block. The filter has been implemented using a very low-cost 2.4 mum CMOS process (Mietec). The whole circuit occupies 2.8 mm(2) and consumes 19 mW from a +/-1.5 V supply. Experimental results are given for a 4.5 MHz to 12 MHz tunable low-pass filter with 58 dB of dynamic range at 10 MHz.
引用
收藏
页码:35 / 41
页数:7
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