Comparator architecture that will achieve 1.6mV resolution

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nijMcnij

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hello all,

i am designing a 10 bit ADC, and i need an architecture for a comparator that can achieve a resolution of 1.6mV.

any ideas, papers, books, references?

many thanks
 

Re: comparator design

This resolution may be too high, if your structure has a auto-zero preamplifier, your requirement can be realized.
 

comparator design

you should give your comparator's speed. If u don't care speed It is easy but maybe don't fit you application.
U can reference book "Analog Integrated Circuit Design" by Ken Martin
 

comparator design

use dynamic comparator
 

Re: comparator design

speed is not important for me.

the resolution is only important, and also design complixity should be minimum

thanks
 

comparator design

U can use the 2 stage op comparator.the first stage use diode(mos) loading.That's enough for u design.
 

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    nijMcnij

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comparator design

As long as speed is not an issue here, offset can be reduced by utilizing larger area transistors in the preamplifier. Check the matching propoties of the process.
 

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