Design of low power SRAM- based ubiquitous sensor for wireless body area networks

Abstract

Purpose Smart ubiquitous sensors have been deployed in wireless body area networks to improve digital health-care services. As the requirement for computing power has drastically increased in recent years, the design of low power static RAM-based ubiquitous sensors is highly required for wireless body area networks. However, SRAM cells are increasingly susceptible to soft errors due to short supply voltage. The main purpose of this paper is to design a low power SRAM- based ubiquitous sensor for healthcare applications. Design/methodology/approach In this work, bias temperature instabilities are identified as significant issues in SRAM design. A level shifter circuit is proposed to get rid of soft errors and bias temperature instability problems. Findings Bias Temperature Instabilities are focused on in recent SRAM design for minimizing degradation. When compared to the existing SRAM design, the proposed FinFET-based SRAM obtains better results in terms of latency, power and static noise margin. Body area networks in biomedical applications demand low power ubiquitous sensors to improve battery life. The proposed low power SRAM-based ubiquitous sensors are found to be suitable for portable health-care devices. Originality/value In wireless body area networks, the design of low power SRAM-based ubiquitous sensors are highly essential. This design is power efficient and it overcomes the effect of bias temperature instability.

Input Voltage-Level Driven Split-Input Inverter Level Shifter for Nanoscale Applications

“…includes a split-input configuration, which is employed in conjunction with an improved Wilson CM that uses mixed-threshold voltage devices [7,[15][16][17][18][19].…”

“…An improved Wilson current mirror that utilizes mixed-threshold voltage devices has also been reported to address issues with conventional current-mirror-based LSs. In order to achieve even greater energy efficiency, the output stage of an inverting buffer includes a split-input configuration, which is employed in conjunction with an improved Wilson CM that uses mixed-threshold voltage devices [7,[15][16][17][18][19].…”