HI,
does it make sense to filter the ground with a ferrite bead or large value inductor ?
Also how about a floating ground ? Opamp ? Voltage regulator ?
That could be heavily filtered before the "ground regulator".
Bernhard
does it make sense to filter the ground with a ferrite bead or large value inductor ?
Also how about a floating ground ? Opamp ? Voltage regulator ?
That could be heavily filtered before the "ground regulator".
Bernhard
If you place a bead on the ground...
Imagine there's a current spike (like ezverything switches on), it's a transiant, but it's normal
Here, your choke will filter this, and will "lift" the ground potential. But only the ground of the 7220.
If this phenomen is big enough, a 0 at the output could even be ween ad a 1 for other devices connected to the normal ground
Imagine there's a current spike (like ezverything switches on), it's a transiant, but it's normal
Here, your choke will filter this, and will "lift" the ground potential. But only the ground of the 7220.
If this phenomen is big enough, a 0 at the output could even be ween ad a 1 for other devices connected to the normal ground
Bernhard said:
As well, as I/O currents are also ground related
You could however decouple all I/O but will end up with something that wont function at all
What is the rationale behind wanting to add a ferrite inductor ?
You probably have read to many reccommmendations from AD. TI, BB and Crystal
forget about them, please.........
regards
WHAT???
How did you come up with that idea.............?
Never mind.....I'm not that curious.
Jocko
How did you come up with that idea.............?
Never mind.....I'm not that curious.
Jocko
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