AnsweredAssumed Answered

i.mx6 board stack up

Question asked by Douglas Bolton on Feb 13, 2013
Latest reply on Aug 21, 2015 by Richard Rooney
Branched to a new discussion

My PCB fabricator is having trouble achieving the same impedance control used for the i.mx6 SD reference design stackup -

 

Layer1 = 1/2 oz to 1 oz

Layer2 = 1 oz

Layer3 = 1/2 oz

Layer4 = 1 oz

Layer5 = 1 oz

Layer6 = 1/2 oz

Layer7 = 1 oz

Layer8 = 1/2 oz to 1 oz

 

Impedance control Single

50R Layer1/Layer8 = 4.7 mil

50R Layer3/Layer6 = 4.5 mil

 

Impedance Control Differential

90R Layer1/Layer2/Layer3/Layer4 = 5.3/3.7 mil

100R Layer1/Layer8 = 3.7/5.3 mil

100R Layer3/Layer6 = 3.8/5.2 mil

 

Does anyone have PCB fabrication details (dielectric thickness etc) using the parameters above.

 

Thanks

 

Doug.

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