Comparator architecture that will achieve 1.6mV resolution

[nijMcnij]

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

 

[rambus_ddr]

Re: comparator design

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

 

[jerryzhao]

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

 

[dendrite]

comparator design

use dynamic comparator

 

[nijMcnij]

Re: comparator design

speed is not important for me.

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

thanks

 

[jerryzhao]

comparator design

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

 

[eldo]

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.