Op-amp quiz (slides 1- 18)

The … is an operational-amplifier application that uses an 'open loop' connection to bring its full gain of ±100 000 into use.

• Summing amplifier

• Integrator

• Comparator

• Differentiator

Closed-loop gain with reference to op amps is when …

• a feedback resistor is connected from the output to the inverting input.

• no feedback resistor is connected from the output to the input.

• a capacitor is connected from the output to the inverting input.

• a feedback resistor is connected from the output to the non-inverting input.

Pin 1 of an integrated circuit (IC) is indicated by …

• a white '1' on the IC

• two blue lines on the IC.

• an indent with a dot on the left of the indent.

• the pin that is red in colour.

An op-amp circuit without any feedback has ... gain.

• closed-loop

• forward-loop

• reverse-loop

• open-loop

ONE of the characteristics of an ideal op amp is that the input impedance

• extremely high

• zero

• extremely low

• moderate

Label the input A

• Inverting Input

• Non-inverting Input

Label the input B

• Inverting input

• Non-inverting input

What do you expect the output voltage to be?

• +Vcc ​ (Positive saturation voltage)
  

• −Vcc (Negative saturation voltage)
  

• 0V
  

• Undefined (output depends on the specific configuration)