[USRP-users] Conformation Of Maximum Ratings N200, LFRX And Full Scale Deflection ADC

Matt Ettus matt at ettus.com
Thu Apr 2 13:09:12 EDT 2015


Full scale on the LFRX is +10dBm if the ADC gain is turned down.  You can
turn up the ADC gain, which would reduce the full scale accordingly.  You
won't do damage until about +20dBm, but to be safe you should stay below
+15dBm.

Matt

On Thu, Apr 2, 2015 at 9:53 AM, Michael Scott via USRP-users <
usrp-users at lists.ettus.com> wrote:

>   Hi All,
>
>
>
> We are looking at the some of the absolute maximums for the Ettus N200. I
> have done some reading and the maximum power for the LFRX is 10 dBm this is
> 2 V P-P. I believe it can handle 3.3 V P-P. But they use this spec because
> the most the ADC can handle without damage 2 V P-P. We are using the LFRX
> D'Card this has no gain on the frontend. Can you confirm this is true?
>
>
>
> The other main question that I have is that we are trying to figure out
> how much power we can put into are transmitter. So we are wondering what
> voltage on the ADC gives all bits set to a digital ' 1'? In other words
> what gives full scale deflection of the ADC.
>
>
>
> Mike
>
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>
>
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