A voltage-controlled oscillator (VCO) is one of the most important basic building blocks for analog and digital circuits. There are different implementations of VCOs. One of them is the ring oscillator based VCO. A ring oscillator based Temperature Sensors designed is sensitive for small variations of temperature. The Temperature is linearly dependent on the oscillation frequency of ring oscillator, as a way of converting temperature to a digital read out. The proposed temperature sensors occupies smaller silicon area with higher resolution than the conventional temperature sensors based on...