Delta-sigma Data Converters Theory Design And Simulation Pdf -

for i=1:N u = Vin(i) - y(i); % subtract feedback v1 = v1 + a1 u; % first integrator v2 = v2 + a2 v1; % second integrator y(i) = sign(v2); % 1-bit quantizer end

% PSD estimation [psd, f] = pwelch(y, hanning(1024), 512, 1024, fs); inband = f <= fB; snr = 10*log10(sum(psd(inband)) / sum(psd(~inband))); fprintf('SNR = %.1f dB\n', snr); End of write-up.