kickback noise in comparator

[Eojysy]

kickback noise

Hi all,

If the preceding circuit of a comparator is the output of OTA OpAmp, is the kickback noise still critical for this comparator?

why a preamplifier can eliminate kickback noise?

Your help will be highly appreciated

 

[pfd001]

kick back noise

Kickback noise is critical in your circuit.
precamplifiew can't eliminate kickback noise, it can only reduce the noise. If the preamp gain is A, the kickback noise can be reduced by A times

 

[Eojysy]

comparator noise

I use a latched comparator which is figure8.5-7 in Allen's book chapter 8.5.

Connect two 10k resistors to the differential input pair and input a voltage difference between the input pair. While regenerating, The kickback noise makes input difference larger. It looks like good for stabling the comparator.

So I am confusing why kickback noise is critical to the comparator? or the kickback noise is harmful for the preceding circuit

 

[n1cm0c]

preamplifier preceding latched comparator

this has been already discussed in the forum, do a search for kickback and you'll find the link to a paper on the subject.

Added after 10 minutes:



this has been already discussed in the forum, do a search for kickback and you'll find the link to a paper on the subject.


here's the link,

 

[ch1k0]

reduce kickback comparator

it is my link! push HELPED ME for me.