Buffering an Op Amp (Operational Amplifier Circuits)

by admin @, Saturday, May 04, 2013, 00:28 (2698 days ago)

[image][Buffering an Op Amp.TSC] [image]

Driving a heavy (low impedance) load with a precision op amp sacrifices the very parameters that you paid for: offset voltage, drift, bias current, and, of course, MTBF due to high junction temperatures caused by power dissipation. By adding a buffer
amplifier between the op amp and its load places the burden of driving the heavy load on the buffer-- just what it was designed to do. The power dissipation is placed upon the buffer, allowing the op amp to deliver the precision it was selected for.

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