LM741 vs LM324: Op Amp Differences Explained
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This article compares the LM741 and LM324 Op Amps, outlining the key differences between these popular operational amplifiers.
LM741 Op Amp
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.)
LM324 Op Amp
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