Quadrature oscillator based on a novel low-voltage ultra-low-power quasi- floating-gate DVCC

In this work, a new realization topology of the low-voltage ultra-low-power quadrature oscillator is presented. This quadrature oscillator utilizes only two active elements, namely, Differential Voltage Current Conveyors (DVCCs), and five passive ones. All of the elements are grounded, which is recommended for integrated circuit implementation. The DVCC is based on quasi- floating-gate MOS transistor, which is a distinct technique from the conventional one, featuring operation at low-voltage and ultra-low-power conditions; hence, the proposed DVCC works with low supply voltage of + 400 mV and consumes power of merely 6.6 µW. Thanks to these features, the total power dissipation of the oscillator is only 0.28 mW. The simulation results using 0.18-µm TSMC CMOS technology are included in order to prove validity of the design.