13.3.2 Exploring inverting and non-inverting configurations

• An operational amplifier (op-amp) is an electronic device with two input terminals and one output terminal
• In the non-inverting configuration, the input signal is connected to the non-inverting (+) input
• In the inverting configuration, the output is 180 degrees out of phase with the input.


  True
• Signals applied to the inverting input of an op-amp are 180 degrees out of phase
• Match the op-amp input with its effect on the output:

  Inverting Input (-) ↔️ Inverts and amplifies

  Non-inverting Input (+) ↔️ Amplifies without inverting
• The inverting input of an op-amp inverts the signal.


  True
• What is an operational amplifier (op-amp)?

  Electronic device with dual inputs
• The two main configurations of an op-amp are the inverting and non-inverting configurations
• Match the op-amp configuration with its characteristic:

  Inverting Configuration ↔️ 180 degrees out of phase

  Non-inverting Configuration ↔️ In phase
• What does the negative sign in the inverting gain formula indicate?

  180 degrees out of phase
• In the inverting configuration, the output voltage is 180 degrees out of phase with the input voltage.


  True
• In the inverting configuration, the output phase is 180 degrees out of phase with the input.
• In the inverting configuration, the output is 180 degrees out of phase with the input.


  True
• Which input terminal is used in the non-inverting configuration?

  Non-inverting (+) input
• What is the gain formula for the non-inverting configuration?

  Gain = 1 + R_f/R_in
• What does the non-inverting input of an op-amp do to the signal?

  Amplifies without inverting
• The inverting input causes the output to be 180 degrees out of phase with the input.
• What is the formula for the voltage gain in the inverting configuration?

  Gain = -R_f/R_in
• If R_f = 10 kΩ and R_in = 2 kΩ, what is the voltage gain in the inverting configuration?

  -5
• If V_in = 2V, R_f = 10 kΩ, and R_in = 2 kΩ, the output voltage in the inverting configuration is -10V.
• What is the formula for the output voltage in the inverting configuration of an op-amp?

  $V_{out} =$$- V_{\in} \cdot \frac{R_{f}}{R_{\in}}$
• The inverting configuration amplifies and inverts the input signal, while the non-inverting configuration only amplifies it.


  True
• What is the formula for the voltage gain in the non-inverting configuration of an op-amp?

  $Gain =$$1 +$$\frac{R_{f}}{R_{\in}}$
• What is the formula for the output voltage in the non-inverting configuration of an op-amp?

  $V_{out} =$$V_{\in} \cdot (1 + \frac{R_{f}}{R_{\in}})$
• In the non-inverting configuration, the output is in phase with the input signal.
• In the non-inverting configuration, the output is in phase with the input.


  True
• An operational amplifier (op-amp) amplifies the difference between its two input terminals.
• What is the gain formula for the inverting configuration?

  $- R_{f} / R_{\in}$
• What type of signal does an operational amplifier amplify?

  Difference between inputs
• The non-inverting input keeps the output in phase with the input.


  True
• The voltage gain in the inverting configuration is given by the formula: Gain = -R_{f}/R_{in}.
• If R_f = 10 kΩ and R_in = 2 kΩ, what is the voltage gain in the inverting configuration?

  -5
• If V_in = 2V, R_f = 10 kΩ, and R_in = 2 kΩ, what is the output voltage in the inverting configuration?

  -10V
• In the inverting configuration, the output is 180 degrees out of phase with the input.
• Compared to the non-inverting configuration, the inverting configuration both amplifies and inverts the signal.


  True
• The non-inverting configuration ensures that the output signal is in phase with the input.
• What is the output voltage if V_in = 2V, R_f = 10 kΩ, and R_in = 2 kΩ in the non-inverting configuration?

  12V
• What is the gain formula for the non-inverting configuration?

  1 + \frac{R_f}{R_{in}}</latex>
• In the inverting configuration, the output signal is in phase with the input signal.

  False
• What is the gain formula for the inverting configuration of an op-amp?

  $Gain =$$- R_{f} / R_{\in}$