A novel approach to thermometer-to-binary encoder of flash ADCs-bubble error correction circuit

Abstract

Thermometer-to-binary (TM2B) encoder is a vital component of a flash Analog-to-Digital Converter (ADC). In this paper, we propose a new approach to subside Bubble Errors up to third-order. Whereas existing approaches deal with first/second-order bubble errors only, and failed with higher order of bubble errors. The simulation results illustrate that the proposed circuit requires lesser number of transistors and consequently consumes less power, which makes the circuit superior to the existing models. Bubble error correction circuit is simulated by using Xilinx (Verilog code) and verified all results with theory.