Author/Authors :
Gueddah, N National School of Engineers of Sfax - Micro Electro Thermal Systems, Tunisia , Masmoudi, M National School of Engineers of Sfax - Micro Electro Thermal Systems, Tunisia
Title Of Article :
A programmable resolution A/D converter modeling
Abstract :
This paper describes a VHDL implementation of a behavioural model for novel programmable resolution analog to digital converters (ADCs). This architecture uses the dichotomic method in the conversion. The goal for using this VHDL description is to validate the algorithm conversion and facilitate the synthesis of the digital part. In this example it includes digital control ofdichotomic method. The structure ofthe converter is composed ofa reference voltage generator, a programmable gain amplifier and a low resolution ADC. An ADC of l Z-bits has been modeled and simulated using VHDL. The Static Test Ramp Method is appliedfor the testing ofthe IZbitsADC models. Also, we show how the analog parts affect the linearity ofADC. Static parameters such as INL and DNL are determined andpresented.
NaturalLanguageKeyword :
NO converter , programmable gain amplifier , modeling , test ramp , VHDL
JournalTitle :
Lebanese Science Journal
