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Active sensitivity minimization in SAB's with active compensation and optimization

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1 Author(s)

In this paper, a new high-gain three-port operational amplifier (OA) circuit is used to replace the single OA in single amplifier biquads (SAB's). The resultant biquads will have the first-order effect of the OA's finite gain-bandwidth products (GB) completely eliminated from their dominant pole frequencies. Then, the widely used bandpass filter will be considered, where the remaining dominant second-order effects of the OA's GB products will be minimized by choosing appropriate element spreads satisfying the technology. This results in a bandpass filter which has better performance than any other actively compensated filters. The comparison of the results and experimental results follow to prove some of the conclusions made in this paper.

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IEEE Transactions on Circuits and Systems  (Volume:29 ,  Issue: 4 )