The principle behind Sigma-Delta ADC is oversampling.(a) True(b) FalseI had been asked this question in an interview for internship.Origin of the question is ADC Tradeoffs topic in section Technology Tradeoffs in Software Defined Radio of Cognitive Radio

The principle behind Sigma-Delta ADC is oversampling.(a) True(b) False

1.	The principle behind Sigma-Delta ADC is oversampling.(a) True(b) FalseI had been asked this question in an interview for internship.Origin of the question is ADC Tradeoffs topic in section Technology Tradeoffs in Software Defined Radio of Cognitive Radio
Answer» Right OPTION is (a) True To elaborate: It can be observed from the expression SNR=6.02*B+1.76+10log\((\frac{f_s}{2f_{MAX}})\), as the sampling FREQUENCY INCREASES, SNR increases. This is the principle behind Sigma-Delta ADC. The amount of oversampling is given by the RATIO of sampling frequency to Nyquist frequency.

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