Looking for an "better" LM741 op amp

Flashlight Modding and DIY Parts
1

Hi! Right now i am doing my electronics course final project. It basically a transmitter and a receiver for an analog signal (10Khz +/-) , a led on the emitter and a photo-diode on the receiver. The op-amps will be used as a astable multivibrator and as a transimpedance amplifier with a Rauch band pass filter connected to it.

I am looking for something better than te LM741 because the feedback that i got from students that already finished is that it is a bit prone to get noisy, very finicky and the bandwith could be better. There are thousands of other op amps and i am a bit lost, what do you guys recommend?

EDIT: In response to /u/1Davide

supply voltage? Single supply or dual? How high?

Dual 10V

Minimum speed required?

I supposed you are asking for the slew rate? Honestly i’m not really sure, but it’s going to be dealing with a audio signal, a song, voice and stuff like that

Rail-to-rail in required?

Rail-to-rail out required?

Yes to both.

Audio (low noise)

Yup

Output current?

Doesn’t need to be super high, there will be a driver circuit “doing all the work” to power a small speaker

Single, dual, quad?

Single, but if there isn’t another option dual is fine i guess

It’s to use on a bread board so DIP please.

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You need to breadboard and experiment with a 741 on the bench instead of listening to other students who don’t know what they are talking about.

The 1.5 MHz bandwidth of a 741 is more than enough to handle any audio signals, so that excuse is bunk.

When folks claim their op amp is noisy, then they haven’t done diligence with cleaning up the power supplies with filtering caps, or nulling out input offsets, etc. These are basic tools and skills needed by a designer and building prototypes is a way to get the experience and knowledge of what works and what doesn’t—there are no short cuts.

If you miss this opportunity then you will never understand how to make circuits work for the rest of your life.

3

I'll suggest you the LT1115 , used it few years ago , excellent results !.., also LM386 was a good choice...Agree with kennybobby , power supply has to be very well stabilized and filtrated ( capacitors ) , the lay down without ground loops , quality capacitors on input and output ,metal resistors..., everything done according with the principle : garbage in, garbage out !...

Good luck, with your project !