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SMoor.2
SMoor.2
Visitor II
October 28, 2020
Question

TDA7266M max input voltage

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.

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    Peter BENSCH
    Peter BENSCH
    ST Technical Moderator
    October 29, 2020

    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.

    When your question is answered, please close this topic by choosing Select it best.

    /Peter

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