Hi,
I am working with TPA6203A1 mono amplifier. I need to design a noise-free amplifier.
I saw 85-db PSRR for 90hz to 5khz from datasheet. I have calulated ripple value from that. Check check whether my calculation is correct or provide advise if you have any other approach.
Gain I have calculated from my design = 20 log (5.25) = 14.4 (Note: 5.25 vale is Vout/Vin value of Op-amp).
85 - 14.2 = 70.6 => 10^(-70.6/20) = 0.0003
Thus my Amplifier can tolarate 0.3mV ripple for every 1 V of supply. My supply voltage is 5V, thus it can tolarate 1.5mV ripple.
Is my calculation correct or I have to use any other approach??
If any other approach, it is appreciable to suggest me that solution.
Please provide me solution ASAP.
Thanks,
Arun