how generate different voltage reference?

[chunlee]

i had design a bandgap voltage with the output voltage almost 1.2v. how can i use the bandgap voltage to generate different voltages? such as 1.3v, 0.8v and so on.

my vdd supply is 1.8v.

Thank you for your help.

 

[vbhupendra]

use cascode structures for generating further voltage levels. like you generate different current from a single Iref using current mirroring.

 

[huojinsi]

Pls refer to the picture.

 

[jodenma]

change your BG structure and change the res value you can get different reference voltage.

 

[yuyangjp]

First V2I,than I2V.then you can get the voltage you want.