A 350-mV 2.4-GHz quadrature oscillator with nearly instantaneous start-up using series LC tanks
2017 IEEE Asian Solid-State Circuits Conference (A-SSCC), 2017•ieeexplore.ieee.org
We propose a ring-based quadrature LC-tank oscillator for Internet-of-Things (IoT) that can
operate under a 350-mV supply voltage of energy harvesters. The oscillator is based on a
series LC tank, with additional control circuitry to realize a nearly instantaneous start-up of
one/two RF cycles to facilitate a deeply duty-cycled burst-mode operation of IoT. Fabricated
in TSMC 28nm CMOS, the prototype consumes less than 1.3 mW from 350mV supply and
0.07 mm 2 in area, while achieving phase noise of better than-118dBc/Hz@ 3MHz …
operate under a 350-mV supply voltage of energy harvesters. The oscillator is based on a
series LC tank, with additional control circuitry to realize a nearly instantaneous start-up of
one/two RF cycles to facilitate a deeply duty-cycled burst-mode operation of IoT. Fabricated
in TSMC 28nm CMOS, the prototype consumes less than 1.3 mW from 350mV supply and
0.07 mm 2 in area, while achieving phase noise of better than-118dBc/Hz@ 3MHz …
We propose a ring-based quadrature LC-tank oscillator for Internet-of-Things (IoT) that can operate under a 350-mV supply voltage of energy harvesters. The oscillator is based on a series LC tank, with additional control circuitry to realize a nearly instantaneous start-up of one/two RF cycles to facilitate a deeply duty-cycled burst-mode operation of IoT. Fabricated in TSMC 28nm CMOS, the prototype consumes less than 1.3mW from 350mV supply and 0.07mm 2 in area, while achieving phase noise of better than -118dBc/Hz @3MHz. Frequency tuning range is 2.24~2.61GHz.
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