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This paper presents a multi-channel analog front-end (AFE) for wearable dry EEG recording system. A novel AFE architecture is proposed to combine Time Division Multiplexing (TDM) together with chopping stabilization to improve the system-level common mode rejection ratio (CMRR) and the AFE input-referred noise. By utilizing TDM technique, single 2nd stage amplifier can be shared by multiple channels,...
In this paper, we present a dynamic voltage scaling supply (DVSS) for electrical stimulation applications. The core architecture of the proposed DVSS is based on a 7x series-parallel charge pump structure. It converts 1.65V DC input into N × 1.65V DC output in which the number of N can be dynamically scaled from 1 to 7. The DVSS circuit consumes a static power of 20μW and achieves a peak efficiency...
A piecewise analytical function is proposed and applied to investigate the steady-state behavior of series–parallel resonant converter operated in a discontinuous current mode. The converter shows two sequences of the equivalent circuits alternatively operated in the discontinuous current mode with different output voltages. To get the response time of current in one resonance, a successive solving...
The paper presents the design and implementation of a complementary metal-oxide semiconductor (CMOS) based integrated sensor system employing bacteriophage or phage organisms as recognition elements to detect deadly bacteria such as E-Coli and Salmonella. The system works on the basis of monitoring the changes in capacitance signals caused when the target bacteria get attached to the sensing interface...
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