Electronic Devices - Operational Amplifiers - Discussion
Discussion Forum : Operational Amplifiers - General Questions (Q.No. 31)
31.
Refer to the given figure. The op-amp has a unity-gain bandwidth of 3 MHz. Determine the BW of the circuit.
Discussion:
2 comments Page 1 of 1.
Swapnil said:
1 decade ago
Use:
f1=Avd*Fc.
Where f1=unity gain frequency or bandwidth product(3mhz).
Avd=open loop voltage gain(80/3).
Fc=cutoff frequency(to be calculated).
f1=Avd*Fc.
Where f1=unity gain frequency or bandwidth product(3mhz).
Avd=open loop voltage gain(80/3).
Fc=cutoff frequency(to be calculated).
Taruna said:
1 decade ago
In case of inverting amplifier B.W=(UGB)K/Af
and value of k approximate equal to 1.
So:
B.W=3mhz/(-Rf/R1)...
and value of k approximate equal to 1.
So:
B.W=3mhz/(-Rf/R1)...
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