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This paper presents an economical time-domain CMOS smart temperature sensor with only one delay line. With the use of a path selection circuit, the delay line was used to first sense the temperature, to generate a pulse with a width proportional to absolute temperature (PTAT). The original delay line was then reused to measure the PTAT pulse. Final digital code conversion was fulfilled using a simple...
<para> To realize the on-chip temperature monitoring of VLSI circuits, an accurate time-domain low-power CMOS thermostat based on delay lines is proposed. Contrary to the voltage-domain predecessors, the proposed circuit can benefit from the performance enhancement due to the scaling down of fabrication processes. By replacing R-string voltage division and voltage comparator with delay line...
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