Simulation of Signal Conditioner Circuit for Water Quality Monitoring Device using Current Differential Trans conductance Amplifier

Armaan singh

Abstract


A new configuration realizing water quality monitoring device using the photocatalytic sensor for the determination of chemical oxygen demand (COD)involving CMOS current differencing trans conductance amplifier (CDTA) based low pass filter free from trans conductance variation is proposed. The circuit uses four CDTA’s as active elements and together with two capacitors and one resistor as passive elements. The use of this active component makes the implementation simple and attractive. The functionality of the circuit is tested using Tanner simulator version 15 for a 70nm CMOS process model also the transfer function realization is done on MATLAB, the Very high speed integrated circuit Hardware description language(VHDL) code for the same scheme is simulated on Xilinx ISE and various simulation results are obtained. Simulation results are included to demonstrate the results.

Keywords


Chemical Oxygen Demand, Low Pass filter, CMOS, CDTA, Xilinx

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References


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