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An old LM324 is one of the first "low power" opamps. Since it is low power then its output slew rate has trouble with frequencies higher than 2kHz, it is noisy and has crossover distortion.
Since you need an instrumentation amplifier then use an instrumentation amplifier IC that already has very well-matched resistors inside.
- - - Updated - - -
The old LM324 is one of the first "low power" opamps. Then its output slew rate is slow causing trouble with frequencies higher than only 2kHz, it is noisy and has crossover distortion.
Since you need an instrumentation amplifier then use one of the many instrumentation amplifier ICs that are available today.
Since you need an instrumentation amplifier then use an instrumentation amplifier IC that already has very well-matched resistors inside.
- - - Updated - - -
The old LM324 is one of the first "low power" opamps. Then its output slew rate is slow causing trouble with frequencies higher than only 2kHz, it is noisy and has crossover distortion.
Since you need an instrumentation amplifier then use one of the many instrumentation amplifier ICs that are available today.