I need to use a voltage follower that runs off a 9 v battery (actually, two batteries so +- 9V is available), from the output of a Burr-Brown INA125 amplifier to the analog input of a DATAQ data acquisition unit. The DATAQ is running at about 1000 data points per second. Is there a particular op-amp that would be useful in such an application? Or would something besides an op amp be more useful? Thanks!