Difference between LM324 and LM741

Other Hardware General Electronics
1

Hi.
Does somebody know the general differences between LM324 and LM741.
Can I use both of them as buffer.
My input signal is a pulse 400 Hz with logic amplitude 0 and 5V.
Which one is better to use as buffer? the output of buffer goes to ADC of MCU.
Very thank you.

2

Hi,
Do you want to buffer a digital signal?

Google digital buffer IC

Be amazed!! ! !

Tom.... :slight_smile:

3

You can use the LM324 with a signal supply, that might be what is important.

Read:

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4

leoncorleone:
Hi.
Does somebody know the general differences between LM324 and LM741.
Can I use both of them as buffer.
My input signal is a pulse 400 Hz with logic amplitude 0 and 5V.
Which one is better to use as buffer? the output of buffer goes to ADC of MCU.
Very thank you.

Neither, you need a rail-to-rail opamp (the 741 would need a +/-10V supply at least to work,
and its an ancient design by todays standards).

I presume you have an analog signal and the "logic amplitude" phrase is just confusing? If it
goes to an ADC its analog yes?

If you want a high performance true rail-to-rail opamp (both input and output) so that you
only need a 5V supply, go for something like an AD8656 (surface mount only though) which is true rail-to
rail on both input and output (careful, many rail-to-rail opamps aren't actually rail-to-rail on
both inputs and outputs).

What exactly are you trying to do? Do you need a buffer at all (what is the input signal source
impedance?)