[headphonatic]

Can someone tell the difference between these two? 
http://www.amazon.com/TEXAS-INSTRUMENTS-OPA2132P-OP-AMP-0-5mV/dp/B005S3QGR0/ref=sr_1_1?s=industrial&ie=UTF8&qid=1390949993&sr=1-1&keywords=op2132
and
http://www.amazon.com/Texas-Instruments-OPA2132PA/dp/B00EABU3B6/ref=sr_1_2?s=industrial&ie=UTF8&qid=1390950243&sr=1-2&keywords=op2132

 

[ClieOS]

P is slightly better rated than PA.
 
Why are you looking for opamp at Amazon? You can get them much cheaper in most electronics part distributor like digikey or Mouser.

 

[headphonatic]

Thanks!