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Quadrature oscillators are effective in applications such as clock-recovery circuits and complex signal processing. In this paper, the oscillation frequency of the CMOS inverter-type N-stage ring oscillator with wired-OR connections is analyzed. The analysis is applied to a quadrature oscillator proposed in 2008, called the ORIGAMI oscillator, and the extended N-stage ring oscillators. To verify the...
While the CMOS analog circuits can be designed with the minimum-gate-length of the fabrication process in the alpha-power law MOSFET model, the length of a MOSFET gate has been chosen to be a larger scale than the minimum-gate-length in the conventional Shockleypsilas square model. In this paper, we describe a 6-b 100 MSPS CMOS current steering digital-to-analog converter (DAC) with the alpha-power...
Heavy-ion-induced single-event transients (SET) are studied by device simulation on an ATMEL spatial component: the CMOS bulk 0.18 mum inverter. The wide temperature range of a spatial environment (from 218 to 418 K) can modify the shape of the SET. Thus, an investigation of the SET propagation through a 10-inverter logic chain is performed in the 218-418 K temperature range, and the threshold LET...
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