opa552 driving opa549s in parallel

[jaudio]

Im thinking of using 3 opa549 in parallel(549 application note fig.14) but in instead of using a opa549 to drive the parallel 549s,I will use the 552 in the feedback loop with a gain of 10.

See any problems?

 

[jaudio]

What do you think, of the circuits under "inceasing output current"(opa552 datasheet)

figure 9 and 10. It says you can use the opa549 instead transistors.

 

[CarlosT]

Aren't the OPA549s not already high current?

How 'bout using a 551 at unity and then the 549s parallel but inverted? Hhhhmmm...

 

[jaudio]

Aren't the OPA549s not already high current?

The OPA549 puts out 8amps with a 10amp peak not as high as the lm3886.

How 'bout using a 551 at unity and then the 549s parallel but inverted? Hhhhmmm...

Rigth now, I only have the OPA552 (not unity stable). Anyway with the 551 in unity, all the gain would be on the OPA549. I match gain (13.75) levels of all my amps, the OPA549 would be passed the recommended gain max of 10

I’m really not sure how I will configure the amp, so I will use IC socket pin to make changes if necessary