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This paper describes a SAR ADC interface circuit, where the input sensing voltage from a bipolar high voltage domain is linearly translated into the low voltage domain where the SAR ADC operates. The proposed interface circuit employs the principle of charge transfer amplifier to deliver information between two different power domains, in one step, without static power consumption, even if both domains do not share the the same ground voltages. To implement the charge transfer scheme using standard asymmetric LDMOS, we propose a novel dynamic body biased high voltage transmission gate. Prototype simulation using a standard 24V BCDMOS process shows that the proposed circuit draws 2.12μW of power when it senses a voltage that swings between +10V and -10V at 1 kSPS sampling frequency. © 2014 IEEE.

The recent popularity of social networking websites have resulted in a greater usage of internet bandwidth for sharing multimedia content through websites such as Facebook and YouTube. Moving large volumes of multi-media data through limited network resources remains a technical challenge to this day. The current state-of-art solution in optimizing cache server utilization depends heavily on efficient caching policies to determine content priority. This paper proposes a Fast Threshold Spread Model (FTSM) to predict the future access pattern of multi-media content based on the social information of its past viewers. The prediction results are compared and evaluated against ground truth statistics of the respective YouTube video. A complexity analysis on the proposed algorithm for large datasets along with the correlation between Facebook social sharing and YouTube global hit count are explored.