DESIGN AND SIMULATION OF LOW-POWER ADC USING DOUBLE-TAIL COMPARATOR

摘要

Analog to Digital convenors (ADCs) is acts as a bridge between analog and digital components. Comparator is one of the basic & important building block of ADC circuits. The performance of Flash Analog-to-Digital converter is affected due to Comparator and Thermometer-to- Binary encoder design. The design & simulation of 3bit analog to digital converter for low power CMOS is done using TANNER EDA Tool. A new proposed double tail comparator is designed by adding some transistors for low power and fast operation even in small supply voltages. The encoder is design by using multiplexer which converts thermometer codes to binary codes. The circuit operates with an input frequency of 25MHz and 1.8V supply.