600 MHz digitally controlled BiCMOS oscillator (DCO) for VLSI signal processing and communication applications

• Published in: Proceedings of the 8th Great Lakes Symposium on VLSI (Cat. No.98TB100222) pp. 71 - 76
• Main Authors: Yusof, A.M., Lim Chu Aun, Hasan, S.M.R.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 1998
• Subjects: BiCMOS integrated circuits; Communication system control; Control systems; Digital control; Fluctuations; Frequency; Process control; Ring oscillators; Thermal stability; Very large scale integration

A 16-bit digitally controlled BiCMOS ring oscillator (DCO) is described. This BiCMOS DCO design provides improved frequency stability under thermal fluctuations. Simulations of a 5-stage DCO using 1 /spl mu/m BiCMOS process parameters achieved controllable frequency range of 90-640 MHz with a linear...