[hpsdr] SDR Dynamic Range Considerations

[Philip Covington]

On 2/20/07, Tayloe Dan-P26412 <Dan.Tayloe at motorola.com> wrote:
<snip>
> I did not find the input impedance specs of the AKM5394A A/D converter,
> but I assume it is reasonably high compared to the 200 ohms out of the
> detector.  If they are high impedance, the detector R/C roll off ought
> to be pretty good as opposed to connecting to a normal op-amp, which
> does decrease the single pole R/C roll-off effectiveness.

Hi Dan,

Hopefully Bill, Phil or Lyle will correct me if I am wrong, but as I
recall the input impedance of JANUS is around 100k ohms.  That is into
the LT1128 op amps.

73 Phil N8VB

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