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Quantization noise spectrum (Read 2270 times)
adesign
Community Member
Offline
Posts: 73
Quantization noise spectrum
May 15
th
, 2012, 9:02pm
Hi,
In any Nyquist ADC, the quantization noise power is given by V
LSB
2
/12 which is spread across -fs/2 to fs/2.
Could anyone comment on - "why it is limited from -fs/2 to fs/2"?
Thanks,
ADesign
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ywguo
Community Fellow
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Posts: 943
Shanghai, PRC
Re: Quantization noise spectrum
Reply #1 -
May 16
th
, 2012, 2:28am
Because it is discrete output with sampling clock Fs.
Yawei
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adesign
Community Member
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Posts: 73
Re: Quantization noise spectrum
Reply #2 -
May 16
th
, 2012, 4:12am
Thanks Yawei
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raja.cedt
Senior Fellow
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Posts: 1516
Germany
Re: Quantization noise spectrum
Reply #3 -
May 16
th
, 2012, 6:56am
hello,
When you a sample a signal with Fs sampling rate, frequency components above fs will be fold back into fs. Any real signal is symmetric around fs/2.
Thanks,
Raj.
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