论文信息 - The design and implementation of a wide tunning and high stability 38.4MHz DCXO

The design and implementation of a wide tunning and high stability 38.4MHz DCXO

A high precision and high stability 38.4MHz Pierce crystal oscillator (DCXO) is designed and implemented in standard 0.18um cmos process. The DCXO can startup independently from software control and transition seamlessly in and out of 10 bits software control. The DCXO achieves a tunning range of ±100PPM with 0.1ppb/step and the power consumption is 7 mW at 1.8v supply voltage. The measured phase noise are −130.52 dBc/Hz @1kHz and −139.53dBc/Hz @10kHz and a chip area of 0.2 mm2.

[1] Anis Nurashikin Nordin,et al. RF oscillator implementation using integrated CMOS surface acoustic wave resonators , 2011 .

[2] Vishnu Balan,et al. A crystal oscillator with automatic amplitude control and digitally controlled pulling range of /spl plusmn/100 ppm , 2002, 2002 IEEE International Symposium on Circuits and Systems. Proceedings (Cat. No.02CH37353).

[3] V. von Kaenel,et al. A 2.1 MHz Crystal Oscillator Time Base with a Current Consumption under 500 nA , 1996, ESSCIRC '96: Proceedings of the 22nd European Solid-State Circuits Conference.

[4] A. Demir,et al. Phase noise in oscillators: a unifying theory and numerical methods for characterization , 2000 .

[5] Ali Hajimiri,et al. A general theory of phase noise in electrical oscillators , 1998 .