# HW#6 - HW6 EE 230 Electronic Circuits and Systems Due...

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HW6 EE 230 – Electronic Circuits and Systems Due Wednesday October 20, 5:00 pm Problem 1: The open loop gain of an Op-Amp at very low frequencies, A o , is 90 dB and the -3 dB frequency is 100 Hz. When resistors are connected so that the Op-Amp is operating in the noninverting configuration, the gain is 40 dB. What is the new -3 dB frequency? (10 points) Problem 2: A particular Op-Amp has a unity gain frequency of 20 MHz. (10 points) a) What is the Gain-Bandwidth product? b) If the Op-Amp is to be used in the noninverting configuration with a gain of +100 V/V, what is the -3 dB bandwidth of the amplifier in this configuration? Problem 3: You need to build an amplifier with a gain of 40 dB (noninverting) under the design constraints that the -3 dB bandwidth of your amplifier needs to be at least 5 MHz. (10 points) a) What unity gain frequency is needed for the Op-Amp in the circuit? b) If the open-loop -3 dB bandwidth of this Op-Amp is 10 kHz, what is the open- loop DC gain of the Op-Amp? Problem 2.86

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## This note was uploaded on 10/16/2010 for the course EE 201 taught by Professor Kruempel during the Spring '06 term at Iowa State.

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HW#6 - HW6 EE 230 Electronic Circuits and Systems Due...

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