Bandgap Volatage Reference Circuit

[banosey]

Hi Everyone,
I'm gonna design a bandgap voltage reference in 0.13um technology with 1.2V supply.
can any one tell me how to start?.
which topology i should choose?
and if there is a numerical example it would be great.

thnanks in advance,
banosey

 

[erikl]

if there is a numerical example it would be great.

Find a nice overview (scroll down).
The PDF below shows some math about this topic.