论文信息 - Temperature compensation technique for ring oscillators with tail current

Temperature compensation technique for ring oscillators with tail current

A temperature compensation technique for ring oscillators with tail current is proposed and analysed. Both proportional to absolute temperature (PTAT) current source and constant current source are implemented to serve as the tail current. The constant current provides most of current for oscillation, and the PTAT current is for compensating the oscillator's temperature variation. The ring oscillator achieves high frequency-temperature stability.

[1] Ka Nang Leung,et al. Temperature-compensated CMOS ring oscillator for power-management circuits , 2007 .

[2] Xuan Zhang,et al. A Low-Power, Process-and- Temperature- Compensated Ring Oscillator With Addition-Based Current Source , 2011, IEEE Transactions on Circuits and Systems I: Regular Papers.