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SC filters for high-frequencies with compensation for finite-gain amplifiers

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2 Author(s)

The influence of the finite gain-bandwidth product of operational amplifiers on the performance of state-space SC circuits is summarized. A new method is then presented which eliminates the amplifier finite-gain effect completely. This makes it possible to use high-speed single-stage amplifiers with moderate gain values (e.g., as low as 100), for precise high- Q filtering applications. In this way, it becomes feasible to design SC circuits for signal frequencies up to 1 MHz.

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Circuits and Systems, IEEE Transactions on  (Volume:32 ,  Issue: 10 )