bandgap circuit bipolar layout

[cvo]

Hi,
I understand 1:8 layout.
888
818
888

However, how do the best layout look like according to E, C, B (let's say this is PNP and my Collector is connected to Base). Should I make it like the array with all the Emitter face to one side?
Or should I flip them so that Emitter always face to outside world? Anyway, it doesn't matter how my layout designer places them. I still see it is not totally commond centroid. Please help!

 

[sunking]

the second is better. it is more matching.

 

[montage3000]

the one should be in center

 

[jiangwp]

you can use the square type for Base region which surround the Emitter and square collector in order to get the common-centiod.
And the contact is made in the square region to get convinent metal connect everywhere to approach maximum mattching.