mordak
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Hey guys,
I have a question about active RC integrators. I have a bit problem defining opamp spec which would be used in the integrator. If we have an integrator like this one, with RL as its load, that would be used in a circuit with sampling frequency of Fs:
Then Slew Rate (SR) = Vout(max)*Fs
based on SR we can find the tail current of the opamp, say two stage opamp.
But to find the current of the buffer stage of the opamp, we need to divide Vout(max) by RL. Am I right?
In this case, the value of cap does not play any direct role in the calculation. Product of Rin and C would define SR, but not individual value of Rin and C. I wonder if I am correct or not.
I have a question about active RC integrators. I have a bit problem defining opamp spec which would be used in the integrator. If we have an integrator like this one, with RL as its load, that would be used in a circuit with sampling frequency of Fs:
Then Slew Rate (SR) = Vout(max)*Fs
based on SR we can find the tail current of the opamp, say two stage opamp.
But to find the current of the buffer stage of the opamp, we need to divide Vout(max) by RL. Am I right?
In this case, the value of cap does not play any direct role in the calculation. Product of Rin and C would define SR, but not individual value of Rin and C. I wonder if I am correct or not.
