Gain bandwidth Product

[Pavithran]

The above circuit is a Low Pass Filter .
BANDWIDTH is 414 KHz .
Both are UNITY GAIN amplifiers .
Could you please tell what is the GB(Gain Bandwidth Product) of the above circuit . ? ?

Thank you in advance

 

[albbg]

Since this isn't the topology of a low-pass filter I think you are referring to the internal poles of the op-amps. So, as far as I have understood, the question should be: if GBP is known for the op-amps how about the circuit ?
is it correct ?

 

[LvW]

The above circuit is a Low Pass Filter .
BANDWIDTH is 414 KHz .
Both are UNITY GAIN amplifiers .
Could you please tell what is the GB(Gain Bandwidth Product) of the above circuit . ? ?
Thank you in advance

Your question is not clear to me.
At first - you have no "unity gain amplifiers". Perhaps you mean "unity gain compensated"?
Secondly, the gain-bandwidth product is a parameter which characterizes an amplifier with a first-order gain function (20dB/dec drop).
Your circuit resembles a second order lowpass - determined by the opamp poles.
What do you want - the 0 dB crossing frequency of the complete lowpass? Or the GBW of each opamp unit?

 

[Pavithran]

Sir.I want the GBW

 

[godfreyl]

The circuit does not have a GBW.

 

[FvM]

May be it's just an excercise problem:
Assume the OPs have a first order transfer function. The bandwidth (-3 dB?) of the shown circuit is measured as 414 kHz. What is the GBW of the OPs?

Solution: Calculate the circuit's exact transfer function.

The confusing point is, that TL082 GBW can be read in a datasheet. So a measurement and calculation doesn't but determine the deviation beween specified and actual GBW.