[SOLVED] Shift down voltage level from 1.8V to 0.9V

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kingswan

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Dear all

I need to design a circuit which used to shift down a logic level from 1.8V to 0.9V.

I search in the google and ieeexplore, but all the references and papers are designed for level-up.

Due to this is a tiny structure, so that this structure maybe just mentioned as part of a whole paper.

Could you please give me some references and papers so that I can get some idea.

Thank you so much

kingswan
 

Unless I'm missing something - and assuming unipolar logic levels - a simple voltage divider is all you need..?

Two equal value resistors (assuming input leakage currents are negligible) in series - tie one end to ground, apply 0-1.8V logic to the other end and voila! 0 - 0.9V in the middle!
 


Thank you for your reply, due to that resistor is area consuming, I prefer a MOSFET configuration, is there any common way for this?

- - - Updated - - -

Thank you!

This classic configuration is good enough! Plz refer to
https://www.edaboard.com/threads/151498/

Best regards
 

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