Dual Operational Amplifier Question?

lindomar · 4th October 2007, 07:16 PM

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 · 5th October 2007, 10:52 PM

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 · 7th October 2007, 08:05 AM

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

Thanks.

Whortless · 7th October 2007, 08:09 PM

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

Regards

4th October 2007, 07:16 PM	#1
lindomar diyAudio Member Join Date: May 2005 Location: São Paulo	Dual Operational Amplifier Question? 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....

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5th October 2007, 10:52 PM	#2
Whortless diyAudio Member Join Date: Nov 2005 Location: Kocaeli,Turkey	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

7th October 2007, 08:05 AM	#3
lindomar diyAudio Member Join Date: May 2005 Location: São Paulo	Yes... the circuit works. It is an identical copy of the original. Thanks.

7th October 2007, 08:09 PM	#4
Whortless diyAudio Member Join Date: Nov 2005 Location: Kocaeli,Turkey	Ok, Try LT1362, it is a fast dual opamp that can be replacement of LT1220 for this purpose. Regards

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