Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/48606
Title: ULTRALOW-POWER, LOW-VOLTAGE DIGITAL CIRCUITS FOR BIOMEDICAL SENSOR NODES
Authors: MAHMOOD KHAYATZADEH
Keywords: Ultralow-power, Low-voltage, SRAM, Subthreshold, Microcontroller, System-on-Chip
Issue Date: 13-Aug-2013
Source: MAHMOOD KHAYATZADEH (2013-08-13). ULTRALOW-POWER, LOW-VOLTAGE DIGITAL CIRCUITS FOR BIOMEDICAL SENSOR NODES. ScholarBank@NUS Repository.
Abstract: Power consumption arguably is the most important design factor in recent millimeter-scale energy-autonomous systems. In the first part, this dissertation presents a new average-8T write/read decoupled (A8T-WRD) SRAM architecture for low power sub/near-threshold SRAMs. The proposed architecture consists of several novel concepts in dealing with the issues in sub/near-threshold SRAMs. In the second part, this dissertation proposes an application-specific 16-bit microcontroller core which is customized for effective implementation of biomedical tasks. For the best energy efficiency, a subthreshold implementation of this core in a standard 0.13-µm CMOS process is presented. Lastly, the proposed microcontroller and SRAM block in this work are implemented in a single-chip wireless ECG SoC. The entire SoC is capable of working at a single 0.7-V supply. At the best case it consumes 17.4 µW and 74.8 µW in the heart rate detection and raw data acquisition modes, respectively. This makes it one of the best ECG SoCs among state-of-the-art biomedical chips.
URI: http://scholarbank.nus.edu.sg/handle/10635/48606
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