LIC_03_29-09-2023

A summing amplifier(adder) can have

• No more than two input signals

• Two or more input signals

• A closed-loop input impedance of infinity

• A small open-loop voltage gain

When an op amp is not saturated, the voltages at the noninverting and inverting input terminals are

• Almost equal

• Much different

• Equal to the output voltage

• Equal to +/- 15V

The transresistance of an amplifier is the ratio of its

• Output current to input voltage

• Input voltage to output current

• Output voltage to input voltage

• Output voltage to input current

In a current-to-voltage converter, the input current flows

• through the input impedance of the op amp

• through the feedback resistor

• to ground

• through the load resistor

The input impedance of a current-to-voltage converter is

• small

• large

• ideally zero

• ideally infinite

An instrumentation amplifier has a high

• output impedance

• power gain

• CMRR

• supply voltage

In a differential amplifier, the CMRR is limited mostly by the

• CMRR of the op amp

• Gain-bandwidth product

• Supply voltages

• Tolerance of the resistors

Given a reference voltage of +2.5V, we can get a voltage reference of +15V by using

• an inverting amplifier

• a noninverting amplifier

• a differential amplifier

• an instrumentation amplifier

In an op-amp integrator, the current through the input resistor flows into the

• inverting input

• noninverting input

• bypass capacitor

• feedback capacitor

An op-amp differentiator produces an output voltage related to the instantaneous rate of change of the input

• current

• voltage

• resistance

• frequency