Write down the expression for the frequency-dependent

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Reference no: EM13138898

Op-Amp explains

1. Show that gain rolls-off at -6 dB/octave for a passive LP filter.

2. (a) Write down the expression for the frequency-dependent open-loop gain of an operational amplifier. Sketch the magnitude of the open-loop gain of an operational amplifier as a function of frequency. Explain what is meant by a `single-lag' response of an op-amp.

(b) Using the example of a simple RC high-pass filter circuit, show how the inclusion of a coupling capacitor will limit the low frequency of any amplifier circuit.

(c) Derive the expression for the high-frequency closed-loop gain of a basic non-inverting amplifier (the feedback equation). Sketch the circuit of the amplifier to illustrate your derivation. What is the feedback fraction 946; for this circuit?

Reference no: EM13138898

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