f*0
5 楼
oscillation usually comes from straigh capacitance / inductance.
they are hard to get rid of and there is no practical way to find a general
solution. layout is absolutely the key.
if you are producing mhz+ comparators, try to use current transmission
rather than voltage transmission.
they are hard to get rid of and there is no practical way to find a general
solution. layout is absolutely the key.
if you are producing mhz+ comparators, try to use current transmission
rather than voltage transmission.
p*h
6 楼
他的意思是,一个comparator,内部有parasitic resistance ,capacitance, and
inductance. But from outside, there also has some c and L from outer circuit
. Maybe the time constant of these two are different. So they major
determine different aspects of a comparator.
【在 T******n 的大作中提到】
: 没怎么看懂
:
: ~~~~~
: ~~~~~
: ~~~~~~~ ~~~~~~~~~~~
: 这几个不是一回事儿吗?
inductance. But from outside, there also has some c and L from outer circuit
. Maybe the time constant of these two are different. So they major
determine different aspects of a comparator.
【在 T******n 的大作中提到】
: 没怎么看懂
:
: ~~~~~
: ~~~~~
: ~~~~~~~ ~~~~~~~~~~~
: 这几个不是一回事儿吗?
f*0
7 楼
is he talking about discrete comparators? that would be a totally different
ball game.
ball game.
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