1. R&D Micromégas «LAPP»
21/04/2006
Glenn Cougoulat

2. PCB Description Material FR4 Époxy Constraint min 120 
Thickness 1.6 mm
2304 nets + 2 * HT
Layers number : 3
Dimension 600x610 mm2
21/04/2006
Glenn Cougoulat

3. Milestones 1 full week job 2/3 finished Gerber files by the end of May
21/04/2006
Glenn Cougoulat

4. Description des pads Via = V20 Pad 9.8*9.8 mm2 21/04/2006
Glenn Cougoulat

5. Parasitic capacitance study
Pad to Pad
Line to Line
h   C  h +
9.8 mm
120 
200 
120 
Pad to Line
Capacitance = Noise
9.8 mm
h   C 
120 
21/04/2006
Glenn Cougoulat

6. Parasitic capacitance study
Maxwell software = theoritical calculation +/- 5 %
21/04/2006
Glenn Cougoulat

7. In this configuration thickness = no major influence
Thickness influence
9.8 mm h + +
9.8 mm
120 
200 
120 
120 
75 pF  1300 e- rms
In this configuration thickness = no major influence
21/04/2006
Glenn Cougoulat