SUMMARY An analog circuit testing scheme is presented. The testing technique is a sinusoidal fault signature characterization, involving the measurement of DC offset, amplitude, frequency and phase shift, and the realization of two crossing level voltages. The testing system is an extension of the IEEE 1149.4 standard through the modification of an analog boundary module, affording functionalit...

An active silencer to attenuate internal combustion engine exhaust noise is developed. The silencer consists of an electrically controlled valve connected to a buffer volume. The pulsating flow from the engine is buffered in the volume and the valve resistance is continuously controlled such that only the mean flow passes to the atmosphere. This flow is free of fluctuations and consequently fre...

An efficient approach to optimize the performance of integrated analog circuits is described. The main objectives are to speed up the design process and obtain better, possibly optimal, performance compared to manual simulation-based device sizing schemes. The automatic generation of the cost function requires only a circuit netlist, a performance specification, and process parameters supplied ...

A wide dynamic range and a high sensitivity are often incompatible with each other in analog circuits, such as signal converters or amplifiers. In this paper, we present a method of developing current-to-voltage converters featuring both. It comprises two current-to-voltage conversions. One is to convert the DC component, i.e. the average level of the current input, into a voltage with a nonlin...

this paper describes a Design Of Experiments (DOE) based method used in computer-aided design to simulate the impact of process variations on circuit performances. The method is based on a DOE approach using simple first and second order polynomial models with multiple experiment maps. It is a technology & circuit-independent method which allows circuit designers to perform statistical analysis...

Background & aim:  Self-confidence, as one of the key elements of clinical competence, plays an important role in one’s actions and behaviours. Selection of proper instructional methods influences students’ self-confidence. Therefore, this study aimed to compare the effects of web-based training and educational simulation on midwifery students’ self-confidence in postpartum hemorrhage managemen...

Since latest sub-micron technologies enable designers to mix digital/analogue/RF IPs in a single chip, mixed signal verification has become a challenging issue. The complexity of debugging complex high-speed serial interface has shown the importance of performing efficient mixed-signal verification and underlined the lack of an appropriate methodology in the domain. In this paper, we present an...

High levels of design integration and increasing number of analog blocks within a system necessitate automated system-level analog test generation and fault simulation tools. We outline a methodology and toolset for specification-based automated test generation and fault simulation for analog circuits. Test generation is targeted at providing the highest coverage for each specified parameter. T...

Real-time systems require both functionally correct executions and the results that are produced in time. Fault-tolerance is an important requirement of such systems, due to the catastrophic consequences of not tolerating faults. In this paper, we propose an effective Load-driven Adaptive Scheduling Algorithm (LASA) to dynamically schedule real-time tasks with fault-tolerance used in heterogene...

The continuous-time (CT) domain in Ptolemy II aims to help the design and simulation of systems that can be modeled using ordinary differential equations (ODEs). ODEs are often used to model analog circuits, plant dynamics in control systems, lumped-parameter mechanical systems, lumpedparameter heat flows and many other physical systems. Let’s start with an example. Consider a second order diff...