Time-domain temperature sensing system with a digital output and method thereof
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United States of America Patent
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Nov 8, 2016
Grant Date -
Apr 23, 2015
app pub date -
Oct 23, 2013
filing date -
Oct 23, 2013
priority date (Note) -
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Abstract
A time-domain temperature sensing system includes a cyclic delay line, a path selection circuit and a counter. The cyclic delay line includes a plurality of logic components connected. The path selection circuit connects with the cyclic delay line and the counter connects with the path selection circuit. The cyclic delay line is operated to sense and convert a temperature into a time pulse to generate a temperature-related time pulse width signal, and the cyclic delay line is further operated to measure the temperature-related time pulse width signal via the path selection circuit. The cyclic delay line is operated to convert the temperature into the time pulse and the counter is further operated to convert the temperature-related time pulse width signal into a digital signal via the path selection circuit, thereby generating a temperature-to-digital signal.
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