Design Of Continuous Time Second Order Sigma

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Design of Continuous Time Second Order Sigma-Delta Modulator Using Feedback Element Mr. Ravinder Choudhary University Institute of Engineering and Technology Kurukshetra University Kurukshetra, India E-mail- erravindera@gmail.com
Abstract: This paper discuss the continuous time second order Sigma-Modulator with the feedback element having negative feedback. The modulator is of second order that decreases the complexity of the circuit and also decreases the power consumption of the circuit. The circuit works on the analog input signal in the form of jitter sine wave. The feedback element generates the feedback pulse. An efficient
Sigma-Delta modulator is designed with the bandwidth of 10 MHz and sampling frequency of 350 MHz. The modulator is designed using a Matlab code and the circuit is then designed on SIMULINK. The evaluation indicates that the second order modulator achieves 73.5 dB peak SNDR and 73 dB of peak SNR.
Keywords: Delta-Sigma Modulator, SNR, SNDR, Dynamic Range
1.INTRODUCTION
In electronics and telecommunications, modulation is the process of varying one or more properties of a periodic waveform, called the career signal, with a modulating signal that typically contains information to be transmitted. In telecommunications, modulation is the process of conveying a message
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