hi all,

I am simulating a CML buffer with 50 ohm Tx line in spectre,
I am unable to understand one thing why two parameters are given there TD and PL , i think both relate some way or other to length of Tx line.

when i simulate the ckt with no PL i am getting good result but when it is disastrous with any non zero value of PL.

MY QUESTIONS ARE.

1. HOW TD AND PL ARE RELATED .

2. WHAT MIN LENGTH OF TX LINE SHOULD  I CONSIDER ,FOR A DATA AT 10 gBPS

3. FROM WERE CAN I GET THE VALUE OF RESISTANCE AND CONDUCTANCE TO MODEL LOSSY TX LINE.

kindly help...

-akki