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Modeling of Test Stimulus Generator and CORDIC Logic for Testing of CT Sigma Delta Analog-To-Digital Converter
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This paper demonstrates a possibility to realize a simulation of testing strategy of high-resolution Sigma-Delta modulator using MATLAB SIMULINK tool environment. Stimuli are applied into the design under test and extract the important static and transmission parameters by means of the response analyzer. There are so many types of stimulus which have different types of properties. Therefore, the test stimuli generator is a key building block in BIST methodology and must be high quality, flexible and easy to realize.Output Response Analyzer (ORA) is most important component in Built-In-Self-Test (BIST) architecture of CT sigma delta ADC. There are many techniques of ORA used for determining performance matrix parameter such as integral non-linearity, differential non-linearity and Signal-to-Noise Ratio (SNR).In this paper suggests CORDIC technique as ORA and it’s modelling and simulation has been implemented on MATLAB simulink tool environment. The COrdinate Rotation Digital Computer (CORDIC) logic is used to reduces the design complexity of circuit.
Keywords
CT Sigma-Delta ADC Structrure, Test Stimuli Generator, Cordinate Rotation Digital Computer (CORDIC) Logic for ORA, Built-In-Self-Test for CT ADC.
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