[Premium-Rx] The new R&S EM510 Direct-Sampling HF Receiver

John Miles jmiles at pop.net
Sun Feb 25 20:02:23 EST 2007


Yes, that does move it from the "meh, what else is new" category to the
"very interesting" category.  I'd definitely be curious to see more
information on their 60+ MHz 24-bit ADC.

-- john, KE5FX

>
> Hi Clemens,
>
> That is astounding - a 24-bit ADC clocked at 64 or 66 MHz, and
> sampling a 3
> to 10 MHz band slice!
>
> In a 24-bit ADC with ENOB = 20 (for example),  the theoretical margin
> between the noise floor and the "all 1's" point is 120 dB.
> Assuming a 30 dB
> process gain in the DDC following the ADC, this leads to a theoretical
> dynamic range of 150 dB for a 3 MHz-wide RF sample window and a 3 kHz-wide
> baseband.
>
> The ADC's SFDR will now be the limiting factor in the DR
> performance of the
> EM510. I wonder what SFDR values will be achievable with this fast 24-bit
> ADC.
>
> Cheers for now, 73,
> Adam VA7OJ/AB4OJ
>
>



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