Terasic Highspeed AD/DA daughter card analog input levels

[Altera_Forum]

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?

[Altera_Forum]

--- 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,