2010 · 17 citations · 5 references
EngineeringElectrical EngineeringMicroelectronicsOptoelectronicsSensorsCmos Circuit DesignDigital Integrated CircuitsLow-power Digital Circuit DesignPhotodetectorsRadio-frequency Integrated CircuitsSubthreshold Circuit DesignCmos Digital Circuit DesignFree-space Optical CommunicationLow-voltage Cmos DesignOptical Communication LinksSensor ApplicationsSubthreshold Cmos DesignUltra-low-power CmosUltra-low-voltage Circuit Design
Ultra-low-voltage circuits powered and clocked by free-space optical links are implemented in 90 nm digital CMOS. A CDR circuit powered by 4.6 klx illuminance recovers optical data at 50 kb/s using interleaved subthreshold oscillators. A passive-filter ¿¿M produces a 47 dB peak SNDR at 2.1 klx and 256 kHz sample rate. The CDR consumes 217 nW at 300 mV V <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">DD</sub> and 200 kb/s. The ¿¿M consumes 102 nW at 400 mV V <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">DD</sub> and 1.6 MHz for a figure-of-merit of 23 fJ/conversion-step.
5
Micrometre-scale silicon electro-optic modulator
Qianfan Xu, Bradley S. Schmidt, Sameer Pradhan et al. · Nature · 2005 · 2.4K citations
Clock recovery circuits with instantaneous locking
M. Banu, A.E. Dunlop · Electronics Letters · 1992 · 49 citations
Engineering, Computer Engineering, Electrical Engineering +10