Will 0.18u CMOS work down to 1V?

[edadravid]

Hi All
Newbie to the forum. I have a question on what process node would work for a design I am working on. This circuit is very simple (some logic and a capacitor of about 32pf). The chip including I/O's needs to operate from 1V to 1.8V.
The max frequency of operation is 50 MHz.
Essentially the circuit takes an input logic signal switching between GND and VDD and charges the Capacitor.
I was wondering if I can cover the rnage (1V to 1.8V) with a 0.18u process or do I need to look at smaller geometries?
thanks

 

[rca]

should works.

 

[edadravid]

Thanks. I will share the simulations once I have them.

 

[edadravid]

Just a quick update on my findings
We simulated 4 processes (0.35um/3V mixed mode, 0.35um/3V logic, 0.28um/3V logic and 0.18/1.8V logic).
The minimum "working" VDD for our IC in each case is listed below
0.35um/3V mixed mode : VDD range = 1.2V(SS) ~ 3.6V
0.35um/3V logic: VDD range = 1.1V(SS) ~ 3.6V
0.28um/3V logic: VDD range = 0.95V(SS) ~ 3.3V
0.18/1.8V logic: VDD range = 0.7V(SS) ~ 2.0V

[Conclusion]: [1]. 0.18um will work.