LM741 vs LM324: Op Amp Differences Explained

op amp
lm741
lm324
amplifier
operational

This article compares the LM741 and LM324 Op Amps, outlining the key differences between these popular operational amplifiers.

LM741 Op Amp

LM741 Pin Diagram

Figure 1 shows the LM741 Op Amp IC pin diagram.

The LM741 is a widely used operational amplifier for a variety of applications:

  • Comparators
  • Multivibrators
  • Amplifiers
  • Integrators
  • Differentiators
  • Active Filters

In general, the output is given by: Vo = Ao X (V2 - V1) where Ao is the open-loop voltage gain.

Here are some general specifications of the 741 Op-Amp:

  • Number of channels: 1
  • Slew Rate: 0.5 V/µs
  • Input Offset voltage (Max.): 5 mV (at TA = 25 degreeC)
  • Output short circuit current: 25 mA
  • CMRR (dB): 95 (max.)

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LM324 Op Amp

LM324 Pin Diagram

Figure 1 shows the LM324 Op Amp IC pin diagram.

Key features of the LM324 Op Amp:

  • Quadruple Operational Amplifier: A single IC provides the functionalities of four LM741 ICs.
  • It’s a 14-pin IC with 4 differential pairs (8 inputs) and 4 outputs.

The figure depicts VCC and GND pins.

  • Number of channels: 4
  • GBW (MHz): 1
  • Slew Rate: 0.5 V/µs
  • Offset voltage (Max.): 7 mV
  • Output current: 20 mA
  • Offset Drift (µV/C): 7
  • CMRR (dB): 85
  • Vn at 1 KHz (nV/rtHz): 40
  • Architecture: Bipolar
  • IIB (max) (pA): 100000