Question
Download Solution PDFIn an op-amp integrator circuit, the output voltage is proportional to the _______.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFAn operational amplifier is an integrated circuit that can amplify weak electric signals. An operational amplifier has two input pins and one output pin. Its basic role is to amplify and output the voltage difference between the two input pins.
OP-AMP Integrator:
The expression for the output voltage of OP-AMP integrator as:
\({V_0} = - \frac{1}{{{R_1}{C_f}}}\mathop \smallint \limits_0^t {V_{in}}dt\)
Where,
Vin = Input voltage
Vo = Output voltage
Cf = Feedback capacitor
R1 = Input resistance
VA, VB = Virtual ground potentials
I = Input current
Additional Information
OP-AMP differentiator:
The expression for the output voltage of OP-AMP differentiator as:
\({V_0} = - {R_f}C\frac{{d{V_{in}}}}{{dt}}\)
Vin = Input voltage
Vo = Output voltage
Rf = Feedback resistance
C = Input capacitance
VA, VB = Virtual ground points
Important Points
By changing positions of Resistance and Capacitor OP-AMP Integrator converts to Differentiator and vice-versa.
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