CMOS latched comparator design

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kunalb

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i need to design a cmos latched comparator. So can anyone tell me any useful links or books for this.
 

you can refer to:CMOS analog circuit design, P492 to P600
the book can be found in this forum
 
Why you can't use combination of comparator and latch? I think the latched comparator is just that.
 

it is basically a preamplifer, decision circuit (positive feedback latch) and a RS latch to keep teh result.

Look in Davis&Martin or Baker/Lee/Boyce CMOS or Maloberti's book or any other book about analog CMOS..
 

you can see in book Johnson
 

latched comparator has 3 stages:

1) Preamplifier (diode connected load is the norm, does V --> I conversion)
2) decision stage (+ve feedback employing latch, senses I)
3) Output stage (CSDA Complementary Self Biased Diff Amp)

CDSA is then followed by two inverters to give you clean digital output. Read P Ellen, Johns and Martin for details.
 

preamp + regenerative sense amplifer
 

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