svensl
Full Member level 1
sigma-delta single ended
Consider a simple first order single ended sigma delta modulator (RC integrator).
Being single ended one terminal of the RC integrator and comparator sits at the common mode level. Being a dc signal it causes spurs in the o/p spectrum. Is there a way of resolving this without going to a differential circuit? Excluding dithering.
Consider a simple first order single ended sigma delta modulator (RC integrator).
Being single ended one terminal of the RC integrator and comparator sits at the common mode level. Being a dc signal it causes spurs in the o/p spectrum. Is there a way of resolving this without going to a differential circuit? Excluding dithering.