Dual Operational Amplifier Question?

[lindomar]

I am with a problem in the ClassD repair.
This turned off the value of the component.
Is a Dual Operational Amplifier?
Package SOIC 8 Pin.
In component botton is values:
53288 and MALAY

Exist LT1220 DUAL in ONE?

Is Circuit....

 

[Whortless]

Hi, lindomar

The answer is probably no! You should find another replacement fast opamp for this. eg, TLC082, LT1362 etc..
Was your circuit working? I saw you are getting the FB after the filter. However IRAUDamps get this before the filter inductor for analog sigma delta modulation.

I do not have an idea about the 53288 &Malay

 

[lindomar]

Yes... the circuit works.
It is an identical copy of the original.

Thanks.

 

[Whortless]

Ok,
Try LT1362, it is a fast dual opamp that can be replacement of LT1220 for this purpose.

Regards