How to Simulate LDO PSRR in LTspice? Measuring and Improving PSRR Explained

DeaR ALL,

 

I am a student in electronics engineering. Currently I am learning about LDO regulators. I am stuck in my simulation. I hope people here are handy with LTSPICE. I have designed a LDO with the help of various textsbooks. But stuck in simulating PSRR. I hope this is not a silly question. can anybody suggest me a way to simulate PSRR in ltspice? and i hope to get a schematics and instructions to measure the parameter. What does PSRR Suggest? ie if a LDO has a Low PSRR what happens? if High, What happens? How to increase PSRR?

I have attached a ltspice schematics that i have designed doing hand calculations. 

These questions have paused my learning further. please help.

the link to the ltspice files cannot be uploaded but here is the link.

http://www.electro-tech-online.com/attachments/ldo11-asc.100388/

http://www.electro-tech-online.com/attachments/tsmc018um-txt.100389/

 

GopalAdh

I found this reference from analog devices, it gives a test setup to measure PSRR ( http://www.analog.com/media/en/training-seminars/tutorials/MT-043.pdf ).