How to generate a 0.4V voltage source

[davidwong]

Except using resistor ladder,
how can I generate a 0.4V voltage reference/source

 

[IanP]

There are some off-the-shelf voltage reference ICs ..
For example, the LT6650 .. see picture below ..

https://www.linear.com/pc/downloadDocument.do?navId=H0,C1,C1154,C1002,C1463,P2477,D5399

..

Regards,
IanP

 

[bangash]

use diodes to get to ur required voltage level.

 

[davidwong]

I need to inplement in a standard CMOS 0.5um process,
I think it is impossible for me to have a 0.4 forward voltage diode.