Crosstalk, EMI AND EMC

[john]

Hi,
I have follwing questions

1. What are the best ways to minimize crosstalk, EMI and EMC in
digital and analog circuits from printed circuit board's view point?

I read that the trace height above the ground planes paly very
important role in minimizing
crosstalk. The formula, crosstalk = k / (1+ (d/h)^2 ),
where d is the distance between the conductors and h is the height
above the ground plane. K is coefficient of coupling . What can I do to
keep it thin? Any comments!


3. What is the allowable or okay value of cross talk, EMI and EMC in
circuits?

4. How can I measure crosstalk , EMI and EMC ?

5. I have a diffeerential amplifier with a CMRR of 90db, I need to
increase the CMRR upto 120db. What would be the better solution?

6. What is the method to calculate the rise time of the signal before
designing the printed circuit board?

7. How can I keep the inductance and impedance of solid plane ( power
or ground) as minimum as possible? what specifications or data the
manufacturer needs, if I want to design the planes with control
impedance and inductance?

Please advice!

Thanks
John

 

[Eeyore]

Hi,
I have follwing questions

1. What are the best ways to minimize crosstalk, EMI and EMC in
digital and analog circuits from printed circuit board's view point?

Where would you like to begin ?

This isn't a quick answers question by a long long way.

Graham

 

[john]

Please begin.
John

 

[PeteS]

Where would you like to begin ?

This isn't a quick answers question by a long long way.

To say nothing of the fact that engineers don't always agree on a lot
of the 'answers'

Cheers

PeteS