In mixed signal boards, we are keeping analog and digital grounds separated.
Whats the reason to short the two grounds at one point using Ferrite bead?
Can anybody suggest any good study materials to understand characteristic impedance , EMI, EMC, DFM ,DFTconcepts in little bit simple way?
Hi,
for referencing, you must have a common point, as DC system it has to be short, but as AC or HF system their are to separate: these is with some inductance ("ferrite bead L" is a wide band inductance/yoke) light to realize...
For exact infos Google pls: makes often wonder!.
K.
In mixed signal boards, we are keeping analog and digital grounds separated.
Whats the reason to short the two grounds at one point using Ferrite bead?
Can anybody suggest any good study materials to understand characteristic impedance , EMI, EMC, DFM ,DFTconcepts in little bit simple way?
We use ferrite beads between these 2 grounds so that the noise coming from the digital area won't add up to the noise in the analog area and vise versa.