New topology for implementing bandpass, bandstop and allpass filters with CFAs

被引：1

作者：

Maundy, B. ^{[1
]}

Gift, S.

Aronhime, Peter

机构：

[1] Univ Calgary, Dept Elect & Comp Engn, Calgary, AB T2N 1N4, Canada

[2] Univ Louisville, Dept Elect & Comp Engn, Louisville, KY USA

来源：

INTERNATIONAL JOURNAL OF ELECTRONICS | 2007年 / 94卷 / 11期

关键词：

current feedback amplifier; active filters; analogue circuits; bondpass filters;

D O I：

10.1080/00207210701763506

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：

In this brief, a new filter topology based on current feedback amplifiers is presented and compared with its operational amplifier counterpart. The circuits arising from the new topology have the important advantage that access to the Z node of the current feedback amplifier is not required, as is the case with many existing current feedback amplifier filter circuits. The operation and requirements for each of the filters are described. Theoretical results and circuit limitations are discussed and verified with experimental results. In one experiment a bandpass filter with a calculated Q and centre frequency of 20 and 158.53 kHz, respectively was built using the OPA2607 dual CFAs IC. Measured results yielded a Q of 20.153 at a centre frequency of 148.62 kHz showing close agreement with theory.

引用

页码：1025 / 1035

页数：11

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