LM741 vs LM324: Op Amp Differences Explained

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.)

op-amp,operational amplifier

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