How do we proceed here, just change the value in our schematics and place a note or is it necessary to write a ECN for this?
Rene Werner Almesberger wrote: > (For the list: Rene found that the LC filter on the BT module was way > off. The Openmoko schematics show it as C1 = 22 pF and L1 = 3.9 nH.) > > I looked it up in the BOM and found a rather unexpected > MO-CAP 0.2pF 50V 0.25pF SMT0603 NPO C1608NP0208CGT DARFON > > A 200 femto-Farad capacitor, with a +/- 125% tolerance ? That can't > be right, can it ? Well, if > http://www.darfon.com.tw/English/MLCC_OrderingInfo.asp > can be trusted, that's indeed what it is. > > Assuming 1 pF of parasitic capacitance, that would put us at 2.3 GHz > and 57 Ohm, not too far from where we want to be. > > - Werner > _______________________________________________ gta02-core mailing list [email protected] https://lists.openmoko.org/mailman/listinfo/gta02-core
