Re: [Discuss-gnuradio] Schematics for tvrx frontend?

[Marcus Leech]

Given also that the MT4937 is a cable-modem thingy, the analog  outputs 
would pretty-much
 be *designed* to feed a high-speed A/D directly.


Matt Ettus wrote:

>  
>
> > I was really surprised that there basically is no circuitry (like
> > opamp-based impedance matching) between the tuners' output and the ADC.
> >    
>
>
> The ADC is a high impedance input, so you essentially feed it with a voltage. 
> Its also a pretyt low frequency at that point so you don't care about
> reflection on the very short traces.
>
>
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