Study on CMOS operational transductance amplifiers

摘要

The survey describes CMOS circuit design techniques for several fundamental operational transductance amplifiers (OTAs). The OTAs based on the fully differential structure (FD), cross-coupled differential structure with floating voltage adjustment (CCD), and fully differential complementary structure (FDC) are mentioned. A brief analysis on these OTA implementations is offered by explaining the ways to enhance linearity. The OTAs' performances such as power consumption, transconductance value, and dynamic range are compared. A summary to illustrate the promising results that can be achieved and exceeded when designing OTAs is presented.