Behavioral Modeling of A High-Resolution Sigma-Delta ADC

A 24-bit high-resolution sigma-delta ADC system structure is present in the paper, which is designed by adopting oversampling technology and noise shaping technology and simulated in Simulink. A modulator structure with OSR = 128, 6th order, single loop, feedforward and one bit quantization are real...

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Bibliographic Details
Published in2022 10th International Symposium on Next-Generation Electronics (ISNE) pp. 1 - 3
Main Authors Zhongda, Li, Huiming, Zeng, Haoyang, Zhao
Format Conference Proceeding
LanguageEnglish
Published IEEE 12.05.2023
Subjects
Brain modeling
High-Resolution
Jitter
Mathematical models
Modulation
Modulator
Noise shaping
Oversampling
Sigma-Delta ADC
Sigma-delta modulation
Software packages
Temperature measurement
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Summary:A 24-bit high-resolution sigma-delta ADC system structure is present in the paper, which is designed by adopting oversampling technology and noise shaping technology and simulated in Simulink. A modulator structure with OSR = 128, 6th order, single loop, feedforward and one bit quantization are realized. The modulator coefficients are obtained by Matlab. In the Simulink ideal model, the signal-to-noise ratio (SNR) can reach 148.5dB. Considering the non-ideal factors such as KT/C noise, clock jitter and operational amplifier noise, the SNR is 126dB. The 24-bit high-resolution sigma-delta ADC can satisfy a variety of industrial measurement scenarios (such as temperature measurement, pressure measurement, industrial automation monitoring, etc.) and medical applications (ECG measurement, EEG measurement, telemedicine, etc.).
ISSN:2378-8607
DOI:10.1109/ISNE56211.2023.10221631