scope babble:
>formatting link
> Has interesting links, for example:
> Kester, W., Understand SINAD, ENOB, SNR, THD, THD+ N. and SFDR so You
> Don't Get Lost in the Noise Floor,
> Analog Devices, MT-003 Tutorial, p. 5.
>formatting link
Not a bad discussion, thanks.
A couple of nits. First, the correct definition of ENOB and full-scale signal depends on whether the signal is unipolar or bipolar, i.e. whether the DC is considered to be signal or merely an offset to keep the real (AC) signal in range.
The definition used in the article is correct for AC-only signals like radio, but 9 dB too low for AC+DC signals like photocurrents.
Second, AD is inconsistent in the way they quote data converter SNR—they sometimes conveniently forget the factor of sqrt(12).
Cheers
Phil Hobbs