—This paper presents an ultra-low power batteryless energy harvesting body sensor node (BSN) SoC fabricated in a commercial 130 nm CMOS technology capable of acquiring, processing, and transmitting electrocardiogram (ECG), elec-tromyogram (EMG), and electroencephalogram (EEG) data. This SoC utilizes recent advances in energy harvesting, dynamic power… (More)
1 • Wireless body area sensor nodes (BASN) enable inexpensive continuous monitoring of patients • Battery replacement for body-worn devices may not be feasible or desirable
— A boost converter for thermoelectric energy harvesting in 130nm CMOS reduces the achievable input voltage by 50% to 10mV, which allows wearable body sensors to continue operation with thermal gradients below 1 o C. The design uses a peak inductor current control scheme and duty cycled, offset compensated comparators to maintain high efficiency across a… (More)
A 1 trillion node internet of things (IoT) will require sensing platforms that support numerous applications using power harvesting to avoid the cost and scalability challenge of battery replacement in such large numbers. Previous SoCs achieve good integration and even energy harvesting , but they limit supported applications, need higher… (More)
This paper presents an ultra low power clock source using a 1µW temperature compensated on-chip digitally controlled oscillator (Osc CMP) and a 100nW uncompensated oscillator (Osc UCMP) with respective temperature stabilities of 5ppm/ o
— This paper presents a model of a DC-DC converter that is used to study power management techniques like DVFS, PDVS, etc. It accurately predicts the behavior of DC-DC converters of varying topologies across output voltage and current load and predicts the relative benifits of different power management options.
This paper presents a charge-pump based low swing interconnect receiver circuit. The interconnect circuit is single ended and supports swings of 300mV or lower. A charge pump front end at the receiver boosts the arriving signal before restoring it to the full logic level, improving the performance of the interconnect. For a 10mm long interconnect wire in a… (More)
We propose a fully on-chip CMOS temperature sensor in which a sub-threshold (sub-V T) proportional-to-absolute-temperature (PTAT) current element starves a current-controlled oscillator (CCO). Sub-V T design enables ultra-low-power operation of this temperature sensor. However, such circuits are highly sensitive to process variations, thereby causing… (More)