Abstract

The paper designed is a 4-bit Flash Analog to Digital converter (ADC) with the use of Threshold modified comparator circuit (TMCC), used for voltage comparison and NOR ROM encoder with the use of 180nm Complementary Metal Oxide Semiconductor (CMOS) Technology by using cadence tool. Here TMCC’s are introduced instead of conventional comparators. TMCC’s compares very small voltages. It in-turn eliminates the complete resistor ladder and it improves the linearity as well in ADC. The clock rate used here is of 2 MHz and the voltage of operation is 1.8 V.