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sigma delta modulator bandwidth as noise function

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ultralowpower

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Hi,

How to simulate the sigma delta modulator bandwidth as noise quantization function in ELDO or SPICE like simulators?

thanks for your advice.
 

naalald

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Hi ultralowpower,
Az you know for quantization noise we have:

Where He(f) is the NTF, delta2/12 is the total quantization noise and fB is the SD modulator bandwidth. What do you mean by simulating the bandwidth as a function of quantization noise?
 

sunking

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Tran. simulation, then fft
 

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