In Texas website(http://www.ti.com/paramsearch/docs/parametricsearch.tsp?family=analog&familyId=1468&uiTemplateId=NODE_STRY_PGE_T)
I saw few parameters used to categorize OP-AMP's like Status,2nd Harmonic (dBc),3rd Harmonic (dBc),Acl, min stable gain (V/V),Iq per channel (Max) (mA),Number of Channels,Vn at Flatband (Typ) (nV/rtHz)
Can any one tell me what these parameters are and also whether they have to less or more for a good OP-AMP.