A 16 nm FinFet power- and phase noise-scalable DCO using on-chip tapped inductor
Sprache des Titels:
Proceedings of Austrian Workshop on Microelectronics (Austrochip 2019)
In this paper a Digitally-Controlled Oscillator
(DCO) with configurable power consumption and phase-noise is presented. The DCO provides two different power/phasenoise modes while maintaining an almost constant figure-of-merit (FoM) by using a tapped inductor in the LC tank. For each mode (low-power and low-noise mode) a different DCO core is selected, which either connects to the outer taps of the tank inductor or to the inner ones. The presented design achieves a tuning range of 25.9% with a center frequency of 4.88 GHz at a FoM of approximately 185 dBc/Hz. The DCO concept is simulated in a 16 nm FinFET CMOS process.