Question
Download Solution PDFWhat specification of an operational amplifier give how fast the output voltage can change
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFSlew rate is the maximum rate of change of output voltage with respect to time.
Slew rate limits the maximum frequency of operation of op-amp
The slew rate is usually measured in volts per microsecond.
Mathematically,
Vin = Vm sin 2πfmt and
V0 = AVin
then, Slew rate = \({\left( {\frac{{d{V_0}}}{{dt}}} \right)_{max}} = 2{\rm{\pi }}{{\rm{f}}_{{\rm{max}}}}{{\rm{V}}_0}_{{\rm{max}}}{\rm{\;}}\)
∴ We can say that, the signal bandwidth fm is limited by the Slew rate.
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