A first-order Butterworth low pass filter is an interconnection of ____________ and ___________(a) Single low pass RC circuit, Voltage follower(b) Low pass RC circuit, Band-pass RC circuit(c) Low pass RC circuit, LC feedback(d) Single low pass RC circuit, Power amplifierThis question was addressed to me at a job interview.Query is from Frequency Filters topic in portion Op-amps and its Applications of Analog Circuits

A first-order Butterworth low pass filter is an interconnection of ___

1.	A first-order Butterworth low pass filter is an interconnection of ____________ and ___________(a) Single low pass RC circuit, Voltage follower(b) Low pass RC circuit, Band-pass RC circuit(c) Low pass RC circuit, LC feedback(d) Single low pass RC circuit, Power amplifierThis question was addressed to me at a job interview.Query is from Frequency Filters topic in portion Op-amps and its Applications of Analog Circuits
Answer» The correct ANSWER is (a) Single LOW pass RC circuit, Voltage follower Explanation: A first-order Butterworth LPF is an INTERCONNECTION of a single low pass RC circuit and a voltage follower.

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