Exam 35: Operational Amplifiers

The ______________ input of an op amp has extremely high input impedance, but its value is not the input impedance of the circuit.

The triangular schematic symbol of an op amp shows only the ______________ connections to different points inside the op amp.

The signal applied to the input of a differential amplifier is assumed to have exactly the same phase and amplitude and is referred to as the common-mode input.

An op amp that uses JFETs in the input differential amp and BJTs for the following stages is called a ______________ op amp.

A differential amp has one input called the inverting input, one input called the noninverting input, and one output.

Open-loop cutoff frequency is the frequency at which the open-loop voltage gain of an op amp is down to 70.7% of its maximum value at dc.

The frequency at which the closed-loop gain decreases to 70.7% of its maximum is called the

The highest undistorted frequency out of an op amp without slew-rate distortion is called the

The common-mode rejection ratio is usually defined as the ratio of the differential voltage gain to the common-mode voltage gain.

The lower the value of CMRR, the better the differential amplifier.

Circuits that can amplify differential input signals but reject or attenuate common-mode input signals is called a(n)

The first stage of every operational amplifier is a

Slew-rate distortion of a sine wave produces what type waveform?

A(n) ______________ amplifier is a high-gain, direct coupled, differential amplifier.

The differential amplifier shown in Figure has a gain equal to

Input offset current is the difference between the op amp's two input bias currents.

What determines how much of the op amp's output signal is fed back to the input?

There are two ways to avoid ______________-rate distortion of a sine wave: either use an op amp with a faster slew rate or accept an output waveform with a lower peak voltage.

The output of a comparator is always

An amplifier whose output voltage equals the negative sum of the input voltages is called a(n)