Hi Siwon,
We do not recommend using a single-ended input. The unbalanced signal will degrades performance because of the small range of allowable input common-mode voltage.
For signals that do not have content at DC, we suggest using a transformer to convert from single-ended to differential (see EVM schematics). If you need to pass DC signals, then a differential amplifier is required.
Regards,
Matt Guibord