A rail-to-rail class-AB CMOS buffer is proposed in this paper to drive large capacitive loads. A new technique is used to reduce the leakage power of class-AB CMOS buffer circuits without affecting dynamic power dissipation .The name of applied technique is LECTOR, which gives the high speed buffer with the reduced low power dissipation (1.05%) and reduced area (2.8%). The proposed buffer is si...

An automatic placement system with emphasis on technology independent methodology and device matching consideration for analog layout design is presented. A novel optimization approach based on circuit partitioning, simulated annealing and branch-and-bound algorithm is proposed to solve the placement problem. The move set used to generate perturbations for annealing is capable of arriving at an...

|This paper presents a simulation-based approach to automatic test-frequency generation of linear analog circuits considering parameter variations. It consists of two steps. First, a candidate set of frequencies|each detects robustly some faults|is generated by a concurrent and lazy fault simulationmethod. Next, the minimum number of test frequencies to detect all the possible faults is selecte...

Coefficient-based test (CBT) is introduced for detecting parametric faults in analog circuits. The method uses pseudo Monte-Carlo simulation and system identification tools to determine whether a given circuit under test (CUT) is faulty.

conclusions our method provided good results and performing evacuation under the guide of bedside ultrasonography is recommended. results we treated 173 patients, including 164 females (94.8%), with the mean (sd) age of 43.75 (10.62) years. according to vas, 95.4% of patients reported complete satisfaction while 2 (1.2%) were unsatisfied with the results. patients reported no complication of th...

To date, models for simulating sap flow dynamics in individual trees with a direct link to stem diameter variation include only the diameter fluctuation driven by a change in stem water storage. This paper reports results obtained with a comprehensive flow and storage model using whole-tree leaf transpiration as the only input variable. The model includes radial stem growth based on Lockhart's ...

Important features of a deep-submicron MOSFET drain current model capable of supporting both digital and analog circuit simulations are described. Formulation of the commonly used mobility and velocity saturation models have to be revised to account for the influnce of the higher clecttic field in deep-submicron devices. For analog circuit simulations, output resistance modeling and smooth tran...

Analog circuit verification lacks systematization and formalization. The major weakness of todays verification flows is their uncertainty about verification coverage. This contribution demonstrates how novel approaches can overcome this coverage problem by considering the complete analog state space for verification. An approach to model checking proves the absence or existence of errors with r...

SPICE is a widely used tool for simulation of analog circuits. Accurate models of devices are crucial for obtaining realistic results from the simulation. Although SPICE provides circuit designers with built-in models for most widely used devices many devices still must be modelled with subcircuit models in order to achieve sufficient accuracy. The hardest part of creating a SPICE model for a p...