Driving different loads but need same delay and same slew rate

[electronics_eel]

So I have a gated ring oscillator, which is an inverter with switches at the top and bottom of the inverter. The switches are PMOS at the top and NMOS at the bottom. I need the input to these switches the same signal(no delay and same slewrate), but the higher gate capacitance of PMOS is making the slewrate slower than that of input to the NMOS switch slew rate. Does anyone know how to deal with this.


TLDTR- need to drive different capacitances with same slew rate and no delay.

 

[FvM]

Don't understand the problem. PMOS and NMOS transistors will be driven by a common inverter output node, loaded with the sum of both gate capacitances. There's no different input signal and slew rate.

See example of voltage controlled ring oscillator:

 

[dick_freebird]

You need to scale drive to match slew (but do you have to?).
Then you have to match gate drive to gate load, and you
may need to sacrifice delay for delay-match
.
Zero delay is not an option. Zero skew is a demon tweak.
Be careful about setting expectations.

Not a fan of so few stages in the ring, myself. Inverter
stage gain is not high.

 

[D.A.(Tony)Stewart]

need to drive different capacitances with same slew rate and no delay.

if the output drive dV/dt = V/(RdsOn*{Coss||Cload}) then how can dV/dt be constant?