Indian Journal of Science and Technology
Year: 2016, Volume: 9, Issue: Special Issue 1, Pages: 1-6
Fadi Nessir Zghoul1*, Suat U. Ay2 , Ismail Cevik3 , Ahmad A. Ababnah1 Saher A. Albatran1 and Abdallah Y. Alma'aitah1
1 Department of Electrical Engineering, Jordan University of Science and Technology, Irbid – 22110, Jordan; [email protected]
2 Department of Electrical and Computer Engineering, University of Idaho Moscow, ID – 83844, USA; [email protected]
3 Electronics and Communication Engineering Department, Istanbul Technical University, Istanbul – 34469, Turkey [email protected]
*Author for correspondence
Fadi Nessir Zghoul
Department of Electrical Engineering
Email: [email protected]
This paper describes a novel stochastic ADC topology with a wide input range. Stochastic ADC utilizes the randomness of process mismatch in comparators. Offset voltage which is Gaussian distributed represents the input range of stochastic ADCs. Stochastic ADCs have several limitations and drawbacks, such as limited input signal range and large number of required comparators to achieve high resolution. Some methods have been proposed to increase the input signal range at the expense of resolution. In this work we propose a novel stochastic ADC circuitry capable of increasing the input signal range without any sacrifice in the resolution. This new topology cycles the signal until it is within the offset voltage standard deviation. The Stochastic ADC is simulated using MATLAB SIMULINK.
Keywords: ADC, Data Converters, Stochastic ADC, Wide Input Range
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