Hello all,
    I have designed a voltage regulator for a low speed piplened ADC. I have used folded cascode first stage and common source second stage with a resistive ladder load to produce the references for the MDACs.
  I have used cascode compensation take the capacitor from folding point of the first stage to the output of the second stage.
   I have two questions:

 1. I am still having the problem of PSRR at high frequenies as it getting close to 0dB. Is there any other technique to improve the PSRR.

 2. Will putting resistor before capacitor along with the cascode compensation help me.

I will be lot of help to me if someone can give me good references in understanding the psrr issues.

Thanks,
RK

Hello Paul,
        Thanks for the quick response. Yes it improves the psrr at higher frequencies.

  Any references

1. That derive psrr at high frequencies for opamps.
 
2. that explain the psrr improvement techniques for two stage opamps.

Thanks,
RK