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Hi,
I am trying to simulate the second order sigma-delta modulator in MATLAB. According to the books, the in-band noise is calculated from:
n = 10*log10((0.25/12)*((pi^4)/5)*(1/OSR)^5)
(My quantization step is 0.5 and so the 0.25 is its squared)
Above value is around -44 dB.
I am simulating this...
As you know, Sigma-Delta Modulator as the core of sigma-delta ADCs defines the total SNR. I am simulating a very simple code for first order delta-sigma modulator. According to text books, the SNR of the first order modulator is calculated from:
predictedSNR = 10*log10(sig_power) + 9.03*r -...
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