This paper proposes a low voltage CMOS Nano power current reference circuit and presents its performance with circuit simulation in 180nm UMC CMOS technology. The proposed circuit consists of start-up, Bias-voltage, currentsource sub-circuits with most of the MOSFETs operating in sub-threshold region. Simulation results shows that the circuit generates a stable reference current of 4-nA in supp...

A first study of the BTI reliability of a 6 Å EOT CMOS process for potential application in sub-threshold logic is presented. Considerable threshold voltage shifts are observed also for sub-threshold operation. The observed shifts convert to a remarkable current reduction due to the exponential dependence of current on Vth in this operating regime. Moreover, the pMOS is observed to degrade sign...

This paper presents a novel current mode four quadrant multiplier. A pair of sub threshold translinear loops and current conveyors are the basic building blocks in realization scheme. The proposed multiplier features simplicity, low power dissipation. The salient features of this approach are; it‟s single ended inputs; since it uses sub threshold region of operation, this make the design intere...

We consider weighted graphs satisfying sub-Gaussian estimate for the natural random walk. On such graphs, we study symmetric Markov chains with heavy tailed jumps. We establish a threshold behavior of such Markov chains when the index governing the tail heaviness (or jump index) equals the escape time exponent (or walk dimension) of the sub-Gaussian estimate. In a certain sense, this generalize...

A multi-channel algebraic scattering theory, to find solutions of coupled-channel scattering problems with interactions determined by collective models, has been structured to ensure that the Pauli principle is not violated. Positive (scattering) and negative (sub-threshold) solutions can be found to predict both the compound nucleus sub-threshold spectrum and all resonances due to coupled chan...

Although most odorants we encounter in daily life are mixtures of several chemical substances, we still lack significant information on how we perceive and how the brain processes mixtures of odorants. We aimed to investigate the processing of odor mixtures using behavioral measures and functional magnetic resonance imaging (fMRI). The odor mixture contained a target odor (ambroxan) in a concen...

This paper presents a simple Pico Watt reference circuit with the output voltage of 263.1mV using sub-threshold operation of MOSFETs at supply voltage of 0.7V. Proposed circuit consumes merely 400 pW of power at room temperature and it is designed using standard TSMC 0.18μm technology. Reference voltage is provided by subtracting the 0◦C threshold voltage of MOSFETs. The simulation results show...

Ultra-low power device is very popular in recent years because of some applications like medical device and communications. For the ultralow-power consideration, the crucial in SRAMs are stability and reliability. In conventional 6T SRAMs is hard to achieve reliability in sub-threshold operation. Hence, some researchers have considered different configuration SRAMs cell for sub-threshold operat...

Computer simulatioins indicate that the propagation velocity of action potentials in a length o f a nerve axon can be decreased by subthreshold extracellular anodic currents. This phenomenon can be used to increase the amplitude of whole nerve recordings madie with a short cuff electrode with circumferencial metal bands, since larger propagation delays between the bands result in larger recorde...

Device variability in modern processes has become a major concern in SRAM design leading to degradation of both performance and yield. Variation induced offset in the sense amplifiers requires a larger bit-line differential, which slows down SRAM access times and causes increased power consumption. The effect aggravated in the sub-threshold region. In this paper, we propose a circuit that reduc...