Design of 4-Bit Flash Analog to Digital Converter Using CMOS Comparator in Tanner Tool
Recently, the digital multimedia applications become more and more popular due to its functionality rich. This paper proposes a 4-bit, 1.8V, flash ADC (Analog to Digital Converter) design using CMOS comparator with 180nm technology. The conventional comparators have been replaced with the CMOS inverter based comparator designs. The PSRR (Power Supply Rejection Ratio) results obtained are improved with the use of CMOS comparator and by systematically sizing the transistors of the comparators. Thus, it has been observed that it consumes 0.46827mW of average power.