Design of Finfet Based Low Power High Speed and 3-bit Flash Adc

To achieve the power consumption scaling is important in all circuits. In CMOS based circuits scaling can be done up to limited range after that it will introduce short channel effects. To overcome above drawback FINFET has been introduced. Comparator is one of the components most importantly required in analog to digital converter. Operational Amplifiers (Op-Amps) are one of the main blocks in wide range of analog and mixed-signal systems. Operational amplifiers are used in DC bias to high-speed amplifiers and filters. Speed demand for high speed applications such as ADC and DAC lead to increased demand for amplifiers with high gain and speed. FinFET is one of the most promising technologies to design below 50 nm. In order to keep up with technology, transistor sizes must be reduced which leads to several shortcomings in the performance of the transistor.The main parameters considered in the performance analysis are delay, frequency and power consumption. LT-Spice simulation software is used for design and analysis of the comparator circuits in the above specified 32nm scaling range.