Effective Modelling of Higher Order Sigma Delta – ADC Using MATLAB – Simulink for Mulitibit Quantizer

The requirement of effective analog to digital conversion and accuracy gives growth to converters. The sigma delta modulator have a salient feature of shaping the noise, such that noise reduces from the band of interest resulting in high accuracy in comparison to other converters and high tolerance to non-idealities of analog circuits. The significant advantage of the method is that conversion of analog signals can be performed by using only a 1-bit ADC and analog signal processing circuits having a precision that is usually much less than the resolution of the overall converter.

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