2020-10-28 01:52 PM
What is the max signal input voltage for the TDA7266M? We will be trying to merge a tube preamplifier with a 7266 power amp to make a small guitar amplifier. We can always shunt input signal voltage with a zener as the tube pre has a fairly large output signal.
2020-10-29 04:44 AM
No max input voltage is specified because the gain is fixed at about 26dB, so the signal is clipped/distorted anyway when overdriven.
I would recommend to limit the peak-peak input voltage a bit lower than VCC, i.e. the amplitude below VCC/2.
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/Peter