A Review on Low power Design Techniques for CMOS Operational Transconductance Amplifier

In VLSI design low power consumption is as important as speed in many applications since it leads to a reduction in the package cost and extended battery life. Discussion of various low power techniques like Miller compensation capacitance, Bulk Driven and DTMOS configuration is carried out in this paper. Comparison among the different OTA is done in terms of their technology, supply voltage, open loop gain, power consumption, phase margin and CMRR. This paper assists the future analysts to develop proper design of OTA in terms of stability, low power utilization and high frequency operation.