caa a22 4500 463206444 CHVBK 20180405153127.0 cr unu---uuuuu 170326e20070701xx s 000 0 eng 10.1007/s00202-006-0037-z doi (NATIONALLICENCE)springer-10.1007/s00202-006-0037-z Hasan S. Center for Research in Analog and VLSI Microsystem dEsign (CRAVE), Massey University, Room: 3.05, IIMS Building, 1311, Auckland, Albany, New Zealand aut A CMOS DCO design using delay programmable differential latches and a novel digital control scheme [Elektronische Daten] [S. Hasan] A novel 16-bit CMOS digitally controlled oscillator (DCO) is described. This CMOS DCO design is based on a delay programmable differential latch and a novel digital control scheme which yields improved phase noise characteristics. Simulations of a 4-stage CMOS DCO using the 0.5μm Agilent CMOS process parameters achieved a controllable frequency range of 750MHz-1.6GHz with a monotone tuning range of around 1GHz. Monte Carlo simulations indicate that the time-period jitter due to random supply voltage fluctuations is under 250ps for worst-case considerations. Also, phase noise was found to be in the range of −175dBc at a frequency of 600KHz from the carrier at 1.5GHz (for digital control word of 1512H) after numerous iterations of Monte Carlo simulations. FFT analysis indicate a total harmonic distortion (THD) of around −57dB for the DCO output signal. This CMOS design would thus provide considerable performance enhancement in digital PLL applications. Springer-Verlag, 2006 Digitally controlled oscillator nationallicence Phase noise nationallicence Jitter nationallicence Harmonic distortion nationallicence Phase locked loop nationallicence Electrical Engineering Springer-Verlag 89/7(2007-07-01), 569-576 0948-7921 89:7<569 2007 89 202 https://doi.org/10.1007/s00202-006-0037-z text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00202-006-0037-z text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Hasan S. Center for Research in Analog and VLSI Microsystem dEsign (CRAVE), Massey University, Room: 3.05, IIMS Building, 1311, Auckland, Albany, New Zealand aut NATIONALLICENCE 773 0- Electrical Engineering Springer-Verlag 89/7(2007-07-01), 569-576 0948-7921 89:7<569 2007 89 202 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer