A 300-μW 1.9-GHz CMOS oscillator utilizing micromachined resonators
Otis, B.P.; Rabaey, J.M.
Solid-State Circuits, IEEE Journal of
Volume 38, Issue 7, July 2003 Page(s): 1271 - 1274
Digital Object Identifier 10.1109/JSSC.2003.813219
Summary:A low-power low-phase-noise 1.9-GHz RF oscillator is presented. The oscillator employs a single thin-film bulk acoustic wave resonator and was implemented in a standard 0.18-μm CMOS process. This paper addresses design issues involved in codesigning micromachined resonators with CMOS circuitry to realize ultralow-power RF transceiver components. The oscillator achieves a phase-noise performance of -100 dBc/Hz at 10-kHz offset, -120 dBc/Hz at 100-kHz offset, and -140 dBc/Hz at 1-MHz offset. The startup time of the oscillator is less than 1 μs. The oscillator core consumes 300 μA from a 1-V supply.
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