期刊名称：International Journal of Innovative Research in Computer and Communication Engineering
印刷版ISSN：2320-9798
电子版ISSN：2320-9801
出版年度：2017
卷号：5
期号：8
页码：14010
DOI：10.15680/IJIRCCE.2017.0508024
出版社：S&S Publications
摘要：Temperature is unique of the supreme significant important physical quantities and is almost common inour day-to-day life. With the scaling down of modern VLSI technologies, more complicate digital circuits have beenimplemented with a higher clock rate and lower supply voltage, which introduces more constraints for the analogcircuits. Therefore, the design of low voltage, low-power analog circuitries has become more important. Because ofpowered by batteries, the supply voltage is often limited, and the life time of the battery is of great importance for thesedevices, and all these factors basically address the needs of low-power system building blocks. However, decreasedsupply voltage restricts signal swing in the circuits and brings difficulties for analog circuit design. In the low-voltageenvironments, transistor characteristics degrade and the some circuit techniques cannot be used longer thus the lowvoltagedesign is different from the traditional circuit design technique. Ring Oscillator generates the clock signalwhich is proportional to change in the temperature. A current-starved inverter along with 4-digit adjustable inputsmakes ring oscillator frequency-tenable. Voltage level shifter ensures that the counter counts number of its rising edge.The register saves counter output at the very positive edge of external clock. The main difference between twosuccessive outputs of register indicates the temperature.
