Processing math: 100%
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Gain Bandwidth Product for OpAmp
Ask
EC.27)The gain bandwidth product for a 741-opamp , given the closed loop gain,
A_v=80dB
and the cutoff frequency at that gain
f_c=80Hz
is
(a)800k
(b)80k
(c)8k
(d)none of the above
Answer is (a)
Concept
Given ,
20 log_{10} A_v = 80 dB; \implies A_v = 10^4
.
Bandwidth product is given by
A_v\times f_c
= 10^4 \times 80 = 800k
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