Other Parts Discussed in Thread: TPA2100P1
I have some questions on this one that I can’t find in the data sheets:
Are the speaker outputs current-limited or short circuit protected, either differentially or single-ended, or both?
Does each of the OUT+ and OUT- signals center around ground, or is there an offset? (I’m assuming it’s a BTL-type output.)
What power rating should the series resistors that are connected to the speaker be? We are driving a piezo speaker, with C=0.87uF, and are using two 5.11ohm 0603 resistors in series, and that seems much too low of power rating to me. With piezo speakers, my understanding is most of the actual power is dissipated in the resistors (depending on the piezo ESR.) Therefore, for this part at a 31Vpp output, that’s ~10-11w.