[hpsdr] LTC2208 16-bit ADC question

[Scott Traurig]

I'd check for a short between pins 1 and 2 or pins 2 and 3 on the preamp.

73,

Scott

On Sun, Apr 21, 2019 at 4:58 PM K4KV <k4kv at k4kv.com> wrote:

> ***** High Performance Software Defined Radio Discussion List *****
>
> Working with a troublesome Hermes board.  It has a -125db noise floor
> and only rx's strong signals.
>
> I noticed that pin 3 of the LTC2208 is 2.25V
>
> The data sheet says it is supposed to be 1.25V: Common Mode Output voltage.
>
> That signal also goes to the LTC6400 preamp chip.
>
> ???
>
> 73
>
> TIA
>
> Glen K4KV
>
>
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