PSRR calculation

[Tesla96]

Hello,

I 've read in Allen's book that the procedure for simulating PSRR in an opam as a function of frequency is the following:
1. Connect the output of the opamp to its negative input (buffere connected opamp)
2.Add a small AC source in series with Vdd
3.Calculate PSRR by PSRR=Vdd/Vout

For the circuit shown in the picture, which is a single input amplifier, is the PSRR of the total system equal to the PSRR of the feed forward amplifier?
If not, how can i measure it ?

Thanks in advance

 

[danadakk]

This might help -

Simple Op Amp Measurements | Analog Devices

Op amps are often used in high precision analog circuits, so it is important to measure their performance accurately.

www.analog.com

Regards, Dana.

 

[Tesla96]

Wow amazing article !! Thank you VERY MUCH!!

This might help -

Simple Op Amp Measurements | Analog Devices

Op amps are often used in high precision analog circuits, so it is important to measure their performance accurately.

www.analog.com

View attachment 164547


Regards, Dana.