I need to drive a small (8Ω 250mW) speaker. The way I know how to do this is to use an Op Amp and a NPN/PNP push pull (the Op Amp alone can't provide enough current).
Is there a better way to do this? Perhaps an Op Amp which is designed to put enough current out?
I know the LM386 is supposed to be for audio output. *But*, it multiplies voltage x20. I don't need to do that - just provide enough current. And it has a relatively low input impendance. And, it requires a bunch of external components (as shown in the datasheet). Is there a better way to drive a speaker, using an LM386?
Is there a better way to do this? Perhaps an Op Amp which is designed to put enough current out?
I know the LM386 is supposed to be for audio output. *But*, it multiplies voltage x20. I don't need to do that - just provide enough current. And it has a relatively low input impendance. And, it requires a bunch of external components (as shown in the datasheet). Is there a better way to drive a speaker, using an LM386?