Design of Minimum-Power High-Speed CMOS Amplifier Using Self Biased Current Reference Circuit for Biosensor Application

The objective of this work is to eliminate noise from the CMOS sensors three main modules, the current reference signal, the Bias generator, and the operational amplifier. The purpose of this work is to create a low power amplifier design that is low power and highly profitable. Analysis: The proposed improvement is analyzed, enabling low noise amplification, input fit, low noise, and flat gain with relatively low power consumption in the ultra-wideband frequency. In this work, designed a low power Complementary metal–oxide–semiconductor (CMOS) sensors are using self-Biased current reference circuits. This kind of biosensor has a low offset amplifier and a high-resolution current reference signal. This work includes a novel discrete-time direct current (DC) offset take out attempt and an integrated circuit (IC) to comprehensive comparison of offset voltage with minimal power utilization of conventional procedures. This arrangement rejects the maximum DC offset and is placed at the skin termination interface without the requirement for outward drift area. This innovation has a flat power gain and low noise count of 4 GB of fixed gain and a minimum noise figure of 3 GB with the frequency range from 3 to 10 GHz, respectively. Result: The proposed work demonstrates excellent accuracy in applications related to low power high-speed biosensors.