106,659 research outputs found
Low power test compatibility classes: exploiting regularity for simultaneous reduction in test application time and power dissipation
No full textTraditional DFT methodologies increase useless power dissipation during testing and are not suitable for testing low power VLSI circuits leading to lower reliability and manufacturing yield. Traditional test scheduling approaches based on fixed test resource allocation decrease power dissipation at the expense of higher test application time. On the one hand it was shown that power conscious test synthesis and scheduling eliminate useless power dissipation. On the other hand by exploiting regularity in BIST RTL data paths using test compatibility classes an improvement in test application time, BIST area overhead, performance degradation, volume of test data, and fault escape probability is achieved. This paper shows that when combining power conscious test synthesis and scheduling with the test compatibility classes into low power test compatibility classes, simultaneous reduction in test application time and power dissipation is obtained
Efficient BIST hardware insertion with low test application time for synthesized data paths
No full textNew and efficient BIST methodology and BIST hardware insertion algorithms are presented for RTL data paths obtained from high level synthesis. The methodology is based on concurrent testing of modules with identical physical information by sharing the test pattern generators in a partial intrusion BIST environment. Furthermore, to reduce the number of signature analysis registers and test application time the same type modules are grouped in test compatibility classes and n-input k-bit comparators are used to check the results. The test application time is computed using an incremental test scheduling approach. An existing test scheduling algorithm is modified to obtain an efficient trade-off between the algorithm complexity and testable design space exploration. A cost function based on both test application time and area overhead is defined and a tabu search-based heuristic capable of exploring the solution space in a very rapid time is presented. To reduce the computational time testable design space exploration is carried out in 2 phases: test application time reduction phase and BIST area reduction phase. Experimental results are included confirming the efficiency of the proposed methodology
Behavioral models of electronic filters
No full textThis paper describes how generic behavioural filter models are developed. The models are implemented using the analogue behavioural modelling (ABM) feature of PSpice. To demonstrate the use of the models, a number of simulation examples are included
New dual output transconductance amplifier based biquad
No full textA new current mode biquad filter configuration based on dual output OTA is presented. Design equations of various filter functions and sensitivity expressions are given. Based on a discrete bipolar transistor realisation and the cascade approach, the measured frequency results of 4th-order lowpass 5.5MHz Butterworth filter is included
On the implementation of video filters using current feedback amplifiers
No full textThis paper describes the design and practical realisation of 5.5MHz lowpass elliptic lowpass filter with group delay equalisation using current feedback amplifiers. Measured results show that it is possible to obtain video specification filter using active implementation
Current mode filters: design, simulation and implementation
No full textThis paper describes the design, simulation and implementation of a number of current-mode based filters. Three current devices are considered: current conveyors, transconductance and current feedback amplifiers. Simulation are measured results of a 4th-order, 0.1dB chebyshev lowpass filter with a bandwidth of 5MHz are included
Understand the Fundamental of Passive Video Filters
No full textDesigning a passive anti-aliasing video filter requires good understanding of the key elements in such a circuit. Such filters must generally have low passband ripple, a sharp transition band, high stop band attenuation, and linear phase or flat group delay response. This article describes in detail the design of video passive filters including elliptic filters, group-delay and amplitude equalisation. Measured results of typical video filters are included
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