STUDY AND SIMULATION OF SECOND GENERATION VOLTAGE CONVEYOR AND ITS APPLICATION

Abstract

Low-power design for portable devices is becoming increasingly crucial in today's environment. This entices researchers to seek for the best solution while minimising compromises with other characteristics like as speed and area. Power consumption is becoming a critical aspect in chip design as the density of transistors on a chip rises in order to meet high performance requirements. Power dissipation is becoming a serious challenge as transistors are being scaled down. In this project I am working upon “Second Generation Voltage Conveyor (VCII)”. VCII is based upon dual concept of CCII block. VCII is a three terminal device. It provides voltage realization atouput port. I am simulating a VCII Block using LTspice.We have used TSMC level 8, 180nm node parameter in our simulation. This block comprises of 2 stages 1st one is current buffer stage and 2nd one is voltage buffer stage. I have performed its DC analysis as current buffer and as a voltage buffer. I have calculated its impedance at all three ports. In this report I will discuss its functionality and and advantage over Op-Amp. and CCII block in detail. In this report I will present the changes I have made, in current buffer stage, and in voltage buffer stage. In the previous simulation I used the current buffer stage with single output, this time I will use the differential current buffer stage and voltage buffer stage. These stage promises much better bandwidth, stability, and low power results in comparision to previous one. I will also implement application using this voltage conveyor. We will simulate the 1st order Low pass, High pass and Band pass active filters, current to voltage converter, voltage to current converter, voltage differentiator, voltage integrator,voltage buffer, current buffer, and perform AC analysis,DC and transient analysis.