SOME STUDIES ON CMOS/BIPOLAR BUILDNG BLOCKS FOR INSTRUMENTATION APPLICATION

Abstract

In the present dissertation some studies have been carried out on CMOS/Bipolar building blocks for instrumentation application. In instrumentation systems various signal processing functions such as amplification of the output of transducers, signal generation, filtering of signals are being performed by active circuit elements like operational amplifiers. The most commonly used operational amplifier is the internally compensated IC OP-AMP like 741. Though this OP-AMP is very versatile circuit element but is not suitable for applications where very high frequency signals are to be processed. Also it is not suitable for such application where a controlled current output is required. To overcome these limitations various other active building blocks which have different architecture have been proposed by various researchers from time to time. These include current conveyors, operational transconductance amplifier, various derivatives of current conveyors, operations floating amplifiers/...