Design and analysis of multistage OTA using 180NM technology and its application

Abstract

In high performance analog circuit, it is a very challenging task to design a high performance complemtary metal oxide semi-conductor, which is used in either ADC or DAC. As we are dealing with high performance circuit, to meet these requirement both accuracy and fast settling of system is needed, OP-Amp with high DC gain frequency can satisfy both of these requirement. Although a Op-amp with high DC gain satisfy these requirement, but still in many aspects which leads to complementary demands, as the intrinsic gain of many devices are limited. OTA is an Op-amp without an output driver. It is capable of driving small capacitive load. These makes OTA a well suitable for pipeline application.The whole procedure is focused on the development of ultra low power amplifier requiring low silicon area but been able to drive high capacitive load.