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This paper presents a jitter amplifier for oscillator-based TRNG (true random number generator). The proposed jitter amplifier fabricated in a 65nm CMOS process occupying the area of 3,300 μm2 archives 8.4× gain at 25°C and significantly improves the entropy enough to pass randomness test.
This paper describes high speed compressors for high speed parallel addition multipliers like Booth Multiplier, Wallace Tree Multiplier in Digital Signal Processing (DSP). We proposed 4-3, 5-3, 6-3 and 7-3 compressors for high speed multiplication. The compressors reduce vertical critical path more rapidly than conventional compressors. A 5-3 conventional compressor can take four steps to reduce bits...
The purpose of this letter is to present a preliminary experiment, showing that an optoelectronic oscillator can be used for measuring refractive index by detecting the change of the oscillation frequency. The uncertainty of the measurement is of about 10-2. However, this value can decrease to 10-3 or less if the mechanic vibrations, the temperature control of liquid, and the long-term stability of...
This paper describes a design and implementation methodology for fine-grain power gating. Since sleep-in and wakeup are controlled in a fine granularity in run time, shortening the transition time between the sleep and active states is strongly required. In particular, shortening the wakeup time is essential because it affects the execution time and hence does the performance. However, this requirement...
We report a novel analog delay circuit based on Miller effect that features small die area and tunable delay in the order of 100 mus, without using any external component. The delay time can be tuned by varying the biasing current, capacitor sizes, transconductance of the gain-stage transistor and the corresponding output impedances. The turn-on threshold of the delay circuit can also be raised, as...
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