LM741: Noise density

Are you sure you want to use a 50yr old part? 

Hi Kazuki,

TINA-TI simulates the noise like this:

kazuki_lm741.TSC

Take care, as this seems to be a very old Spice model, the low frequency noise is not adequately simulated here, only the midrange noise.

Kai

And, since Kai is looking at the output noise, that peaking to the right is the SSBW response peaking, not the input noise peaking. 

Going a little further, TINA V11 had a library model with this header internally, 

This one also does not have any 1/f effects, so kind of a bad model - seem to be quite a few like that out there, 

Here was one of several recent efforts to asses and fix these kind of things, 

https://e2e.ti.com/support/amplifiers/f/amplifiers-forum/987521/noise-calculation-for-lf-circuit

Hello Itoh-san,

I was unable to find this data. I could get a get voltage noise for a sample of uA741 within 48 hours.

Hello team,

I really appreciate for your kind support.

My customer is looking for P2P replacement for UPC151C-A. This looks very old part as well.

If UA741 is same as LM741C, the voltage noise information would be highly appreciated.

Regards,

Itoh