VOLTAGE DIFFERENCING TRANSCONDUCTANCE AMPLIFIER (VDTA) AND ITS APPLICATIONS

Abstract

Analog VLSI is playing an important part in technology now a days. A vast range of circuits (Amplifers, Filters, Comparators, Oscillators, Multipliers, PLL, Voltage/Current References, Sample-And-Hold Circuits, A/D and D/A Converters, High speed IO Interface etc.) are being introduced now a days for new applications for the purpose of information processing like speech recognition, integrated sensors, handwriting recognition, image processing etc. In this report an Analog Building Block, Voltage Differencing Transconductance Amplifier (VDTA). The realization of which is given in 2011 is simulated using TSMC 0.18 µm CMOS Technology process parameters. VDTA has two different values of transconductances which eliminate the need of external resistors for most of the applications based on VDTA. Also, the application of VDTA as filter, parallel R-L impedance, controller and oscillator has been simulated and presented in this report.