Design and Performance Analysis of Analog Filter and Digital Filter with Vedic Multipliers in Bio-Medical Applications

In this article, we propose a first order analogue LPF based on a simple current mirror Operational Transconductance Amplifier (OTA), as well as a digitized LPF with Vedic multipliers for bio-medical applications. The analogue filter is intended for use in ECG signal acquisition, and then it works in the weak inversion area with extremely low power consumption. The current mirror-based OTA employed here streamlines the entire design of the OTA as well as lowers the number of available components required to implement the filter. The filter was created and modelled on 45nm CMOS technology. Additionally, this article represents a major advancement in the implementation of a FIR filter based on the updated Nikhilam Sutra Multiplier. Additionally, the Kongestone adder would also have been employed to increase speed and performance. To achieve the optimum results, the redesigned FIR filter architecture was modelled and generated employing Xilinx FPGA Spartan 6 as well as Xilinx ISE. The analogue filter does have a bandwidth of 100 Hz as well as a power usage of 0.276 μ,W, according to computational findings. The simulation findings indicate that the proposed Digitized FIR filter architecture works at least 20% quicker than conventional multiplier-based LPFs. If compared to previous designs, both of the digital and analogue filters presented here improved in terms of their performances.