My point was that input voltage is less than supply voltages. Suppose +/-10Vp but the gain is 5. Then ideally speaking I should get +/-50Vp at the output but because the supply is just +/-12V so it will clamp the voltage to +/-12V without damaging the op-amp. Am I right?
Secondly, I want to read the output of the piezoelectric transducer. So some op-amp stages are needed to amplify the signal before giving it to ADC. But there is one problem, when the piezoelectric transducer is subjected to shock/force etc, it can generate voltages in kV range but for a few microseconds. So, I want to design some circuit to protect my op-amps. I read about the TVS diodes but am not sure how to use it. Any ideas?