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Subject: How much the parameters of the stabilty( GM & PM) should be ?

Date: 05/06/03 at 12:44 AM
Posted by: ray
E-mail: purefenkimo@yahoo.com.tw
Message Posted:

Hi, Mr. or Mrs. :
I design an close loop amplifier. And I found that the PM=75 degree but the GM=9dB only. I think that the GM is too
small to stable. But some text book say that GM>=20dB. Can I just design the amplifier with GM=9dB ?

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