PCM4202 Input buffer
TI does not specify anything about COM output load performance. May be the reason for use Low noise low input bias current OPA227 is the high impedance of COM output. May be they care about the noise injection via COM voltage.

So - may be general purpose OP AMP would be ok. May be, you get some small troubles with it.

You can consider AD8675, it is almost as good as OPA227 but much cheaper.