Precision High-Frequency Continuous-Time Integrator Circuits in BiCMOS

In Chapters 2 through 4, we have considered the broad technological and theoretical aspects of high-performance integrated continuous-time filter design. The theoretical limitations of wave filters and architectural considerations in their design were examined in Chapters 2 and 3 and the modified leapfrog filter topology was demonstrated to be apropos for fixed filter applications. There, it was seen that the summing-integrator subcircuit comprised the core of such an implementation. The operational amplifier-RC integrators illustrating the filter topologies in Chapter 3, however, are unsuitable for video frequency IC filters. In this chapter, we consider the implementation of precision integrators in BiCMOS technology. The success of an IC filter design hinges on such circuit design issues.

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