gdhp
Advanced Member level 4
hi all
i met a problem. my circuit block is worked with 2.5v. Now the input siganl level should be 3.3v or 1.5v.
IN my block ,the input circuit is hysteres inverter, so the up and down triger voltage of hysteres inverter are designed at 0.45v and 1.2v. so all level signals can work . But in this case, the duty cycle is bad.
Another way , i use the level shift,such as 1.5to2.5. but the 0.25 device worked in 1.5v is not my expect.
SO who can give me some suggestions?
Thank you!
i met a problem. my circuit block is worked with 2.5v. Now the input siganl level should be 3.3v or 1.5v.
IN my block ,the input circuit is hysteres inverter, so the up and down triger voltage of hysteres inverter are designed at 0.45v and 1.2v. so all level signals can work . But in this case, the duty cycle is bad.
Another way , i use the level shift,such as 1.5to2.5. but the 0.25 device worked in 1.5v is not my expect.
SO who can give me some suggestions?
Thank you!