Title :
A 0.171-mW, 2.4-GHz Class-D VCO with dynamic supply voltage control
Author :
Yoshihara, Yoshiaki ; Majima, H. ; Fujimoto, Richard
Author_Institution :
Center for Semicond. R&D, Toshiba Corp., Kawasaki, Japan
Abstract :
A low-voltage, low-power class-D VCO is presented. An LDO based dynamic supply voltage control technique for the class-D VCO is proposed, which realizes fast and reliable start-up and extremely low-voltage operation of the class-D VCO. The proposed LDO-VCO is fabricated using a 28 nm CMOS technology. The measured phase noise is -115.9 dBc/Hz at 1 MHz offset from the 2.35 GHz carrier, while drawing the current of 760 μA from 0.5 V LDO input. The class-D VCO core consumes 0.171 mW from 225 mV LDO output and the FoM is 191.0 dBc/Hz.
Keywords :
CMOS integrated circuits; UHF integrated circuits; UHF oscillators; integrated circuit noise; low-power electronics; phase noise; voltage control; voltage-controlled oscillators; CMOS technology; FoM; LDO based dynamic supply voltage control; extremely low-voltage operation; frequency 2.4 GHz; low-voltage, low-power class-D VCO; phase noise; power 0.171 mW; size 28 nm; voltage 0.5 V; voltage 225 mV; CMOS integrated circuits; Noise measurement; Phase measurement; Phase noise; Threshold voltage; Voltage control; Voltage-controlled oscillators; CMOS; LDO; VCO; class-D; phase noise; start-up;
Conference_Titel :
European Solid State Circuits Conference (ESSCIRC), ESSCIRC 2014 - 40th
Conference_Location :
Venice Lido
Print_ISBN :
978-1-4799-5694-4
DOI :
10.1109/ESSCIRC.2014.6942091
