What is Gain Bandwidth Product of Op Amp?

[<Mike Ross> mross@smpcorp.com]

Can anyone tell me what, in plain English, exactly is the Gain
Bandwidth Product of an op amp?

I have been told that it could be a measure of how well the output an
op amp tracks its input. The name itself is not self expalitory and I
have no references to turn to. The internet gets me a hash of spec
sheet info, etc., etc.

Thanks,

Mike

[PdB]

If I recall correctly from my electronics education it means that if using a particular Opamp in an amplifier setup:
Say gain = 1 and Bandwidth is BW then:
At gain = 10: Bandwidth is BW/10.
Hope this helps.

[Gigot]

It is that frequency where the gain equals unity, i.e. ONE


"Michael Ross" wrote in message
news:f1f5789d.0201141300.7f0ff967@posting.google.com...
> Can anyone tell me what, in plain English, exactly is the Gain
> Bandwidth Product of an op amp?
>
> I have been told that it could be a measure of how well the output an
> op amp tracks its input. The name itself is not self expalitory and I
> have no references to turn to. The internet gets me a hash of spec
> sheet info, etc., etc.
>
> Thanks,
>
> Mike