Design of Low Power Flash ADC using TIQ Comparator

Abstract

This study presents a novel flash ADC design using TIQ Comparator. Due to the extensive use of comparators during the development of a Flash ADC, high power usage is the main problem. Therefore, by designing a comparator with lower power usage, overall power consumption is minimized. The resistive network and differential comparator used in standard Flash ADC can be replaced with a threshold compensated TIQ module that uses the Threshold Inverter Quantizer (TIQ) approach. According to the TIQ design, silicon area, power use, and operation speed have all been improved. Flash ADC is designed using a modified TIQ Comparator that employs power gating technique and also mux based encoder is designed based on transmission gate logic using lector approach. The design is implemented using Tanner EDA using 180nm technology.