Design LM324 Op Amp Inverting Amplifier with Gain of 50

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SUMMARY

The discussion focuses on designing an inverting amplifier using the LM324 operational amplifier with a specified gain of 50. The circuit requires dual power supplies, providing +12 V and -12 V, with the gain determined by resistor values. Participants emphasize the importance of ensuring the op-amp operates in its linear region for accurate results. Additionally, measuring and plotting the cut-off frequency as a function of log(frequency) is essential for analyzing performance.

PREREQUISITES
  • Understanding of operational amplifier configurations
  • Knowledge of resistor calculations for gain settings
  • Familiarity with dual power supply circuits
  • Basic skills in frequency response analysis
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  • Learn about LM324 op amp specifications and limitations
  • Study resistor combinations for achieving specific gain values
  • Explore techniques for measuring cut-off frequency in amplifiers
  • Investigate methods for plotting frequency response graphs
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Homework Statement



1. Using the LM324 op amp build an inverting amplifier with a gain of 50.
Measure the cut-off frequency.
2. Plot your results on a graph as a function of log(frequency). Comment on the
results


Homework Equations





The Attempt at a Solution


Can some one give me a hand with a please
 
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Do you assume your op-amp works in linear section in the process?
 
This is for a lab so I'm not completely sure but I assume so.
 
You would need a circuit like this:

[PLAIN]http://dl.dropbox.com/u/4222062/opamp%20non%20inv%202%20bias.PNG

The circuit requires two power supplies. One of them has its negative terminal grounded and supplies +12 V to the opamp.
The other has its positive terminal grounded and it supplies -12 V to the circuit.

The gain of the circuit is = R / 1000 so you can calculate the value of R. You may need two resistors in parallel to get this value.
 
Last edited by a moderator:
THANKS vk6kro
 

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