Two-stage high swing fully integrated tunable quadrature sine oscillator
A new fully integrated two-stage operational transconductance amplifier-capacitor (OTA-C) sine oscillator circuit configuration using a 0.5 μm CMOS digital process is described. A simple linear impedance analysis is presented to predict the amplitude and distortion of oscillation. The accuracy of this approach is examined by comparing calculated, simulated and measured results. Transconductance tuning keeps the startup condition satisfied within the frequency range from 2 to 11 MHz.
Keywords: 0.5 mum;2 to 11 MHz;CMOS digital process;OTA-C integrators;THD;differential oscillator;linear impedance analysis;oscillation amplitude;oscillation distortion;startup condition;transconductance tuning;two-stage high swing fully integrated tunable quadrature sine oscillator;two-stage operational transconductance amplifier-capacitor sine oscillator circuit;CMOS analogue integrated circuits;circuit tuning;harmonic distortion;oscillators;
Record created on 2010-05-21, modified on 2016-08-08