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Altera_Forum
Honored Contributor I
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Terasic Highspeed AD/DA daughter card analog input levels

Hello! 

I'v got a question about " Highspeed AD/DA" daughter card from Terasic (http://www.terasic.com.tw/cgi-bin/page/archive.pl?language=english&categoryno=73&no=278) (http://www.terasic.com.tw/cgi-bin/page/archive.pl?language=english&categoryno=73&no=278),). In user manual on this card is written: "AD converter analog input range 2V p-p range." 

But i can't understand top and bottom edges of this range. Is it from 0 V to 2 V? Or some other?
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Altera_Forum
Honored Contributor I
26 Views

 

--- Quote Start ---  

Hello! 

I'v got a question about " Highspeed AD/DA" daughter card from Terasic (http://www.terasic.com.tw/cgi-bin/page/archive.pl?language=english&categoryno=73&no=278) (http://www.terasic.com.tw/cgi-bin/page/archive.pl?language=english&categoryno=73&no=278),). In user manual on this card is written: "AD converter analog input range 2V p-p range." 

But i can't understand top and bottom edges of this range. Is it from 0 V to 2 V? Or some other? 

--- Quote End ---  

 

 

Hi,  

 

From the circuit, it appears that the ADC input circuit will filter out DC signal through capacity and isolate the signal by ADT1-1WT.  

The actual input in AD9248 should be +/- 1V. 

I think this circuit is mainly used for high speed signal processing, it is not suitable for DC signal or slow signal processing. 

 

Barbara,
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