ACTIVE COMPENSATION OF OPERATIONAL TRANSCONDUCTANCE AMPLIFIER FILTERS USING PARTIAL POSITIVE FEEDBACK

被引:23
作者
RAMIREZANGULO, J
SANCHEZ-SINENCIO, E
机构
[1] Department of Electrical Engineering, Texas A&M University, College Station
关键词
D O I
10.1109/4.58300
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
An active compensation technique to improve high-frequency performance in OTA-C filters is presented. Each critical OTA is replaced by two OTA’s connected in parallel with opposite polarity and with different transconductances. The novel feature of this technique is that it does not require tuning to reduce excess phase and yields filters with extended tuning range. It is demonstrated by a programmable bandpass filter from 1 to 9 MHz fabricated in 3-μm CMOS technology. © 1990 IEEE
引用
收藏
页码:1024 / 1028
页数:5
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