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A methodology to mitigate the degradation of digital circuits due to negative bias temperature instability (NBTI) at the view of circuit topology has been put forward in this work. With this approach, simple and strengthened inverter, NAND gate and NOR gate are simulated, the results prove that the proposed strengthened topologies are available to improve NBTI reliability of CMOS digital IC, which...
As technology is scaling down, circuit reliability issues are major concerns because digital circuits are more susceptible to external noise sources. Soft Error is one such source which changes the voltage of internal nodes of the circuit. Hence it is necessary to design soft error (SE) immune digital circuits. In this paper, we proposed a novel SE immune latch circuit which operates at 0.5V using...
Today's digital circuits demand both high speed performance and miniaturization of chip size. As a result, delay fault testing has become very important to verify the quality requirements of VLSI chips. Full scan has been used to generate test patterns that achieves high fault coverage, of which the standard techniques for delay scan testing are skewed-load and broad-side. However, as the circuits...
In many DSP applications (image and voice processing, baseband symbol decoding in high quality communication channels) several dBs of SNR loss can be tolerated without noticeable impact on system level performance. For power optimization in such applications, voltage overscaling can be used to operate the arithmetic circuitry slower than the critical circuit path delay while incurring tolerable SNR...
Timing-error detection and recovery circuits are implemented in a 65 nm resilient circuit test-chip to eliminate the clock frequency guardband from dynamic supply voltage (VCC) and temperature variations as well as to exploit path-activation probabilities for maximizing throughput. Two error-detection sequential (EDS) circuits are introduced to preserve the timing-error detection capability of previous...
The dramatic increase in leakage current, coupled with the swell in process variability in nano-scaled CMOS technologies, has become a major issue for future IC design. Moreover, due to the spread of leakage power values, leakage variability cannot be neglected anymore. In this work an accurate analytic estimation and modeling methodology has been developed for logic gates leakage under statistical...
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