I need more than 250mA of current than the LME49600 provides, what is the best way to parallel the devices to get more current.
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Something like this but with 12 of them in parallel to be able to drive the 4 ohm load. I need super low output impedance so that damping factor can be very high.
I have found mulitple implementations online whch do not use resistors to prevent the divices from driving each other, like this one:
How do they do it then without the resistors? Is this possible due to the internal output resistance of the device?
with a low overall gain the circuit is unstable:
But with a high overall gain it looks much better:
Even a high capacitive load can be driven:
And the output resistances can be increased:
The circuit should still be simulated with real loads, though.
Please take a look at this simulation, the LME49600 is exhibiting some interesting behavior when being driven to the rail. Is this a simulation artifact or will this happen in reality?
I have tried different feedback typologies and nothing seems to fix it.