On 10/24/2010 04:27 PM, Jorge Miguel wrote:
> I will have a look at the white papers from that manufacturers.
> From your words, I imagine that the noise generated by the ADC will
> set a limit in the noise floor at the input of the ADC, isn´t it?
Yes. The total signal power arriving at the A/D (s
Hi Marcus,
-10dBm corresponds to 100µW. With an input impedance of 100Ohms, since Pmax
rms= (Vmax rms)^2 / R, --> Vmax rms= 0.1 volt
So, if I am right the maximum theoretical voltage at the input of the ADC,
if 0 dB gain is set in the transceiver (XCVR2450 in my case) and noise
figure of all co
On 10/24/2010 01:07 PM, Jorge Miguel wrote:
> Hello,
>
> I am trying to find out the minimum/maximun input power of the ADC
> LTC2284.
> I know that the maximum input voltage is 1 Volt, 0.707Vrms, but what
> is the input impedance? so that I can calculate the maximum input
> power as:
>
> minimum i
Hello,
I am trying to find out the minimum/maximun input power of the ADC LTC2284.
I know that the maximum input voltage is 1 Volt, 0.707Vrms, but what is the
input impedance? so that I can calculate the maximum input power as:
minimum input power (SNR ADC) = Maximun input power
( [(0.707)/(2^1
On 10/19/2010 12:21 PM, Jorge Miguel wrote:
> Hi Marcus!
>
> How do you get the 85 dB value? Is the Intermodulation distorsion of
> the page 3 ADC datasheet?
In the "features" list for the LTC2284:
72.4dB SNR, 88dB SFDR
SFDR is "spur-free dynamic range".
>
> I am not an expecienced engineer (I a
Hi,
I am trying to find out the dynamic range of the system USRP2-XCVR2450.
Looking at the schematics it seems there isn't automatic gain control in the
whole RF chain, Isn't it?
Thus the dynamic range of the system would be the ADC dynamic range, which
is 2 volts
Am I right?
Cheers,
Jorge.
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