@Stefan Schippers hello sir where can i find the documentation for level shifter(charge pump) which are available in skywater std library?

@Rafeeq Khan Mohammed How about here?

@Mitch Bailey thank you so much Could you suggest me which level shifter would be suitable for making variable amplitude of square wave pulse with help of DAC and levelshifter

I probably won’t be much help. Is the input voltage fixed at 1.8V or 3.3V? The output voltage is to be the determined by the DAC output, right? What is the output voltage range?

Yes out put voltage is determined by dac out Output voltage range from 0.2 to 3.3 or 5v based on the programming pulse

What about this? If the input pulse is 1.8V, you could use the

lsbuflv2hv

cell to increase the pulse to 0.0V~3.3V(or 5V the max DAC output). Invert that signal with a high voltage inverter and use those two signals to control 2 high voltage transfer gates with connected outputs. Connect the input of one transfer gate to ground and the input of the other to the DAC output.

Ohk thank you so much I will try simulating and check the result wheater it's expected behavior or not

The output in your application must be a DAC. Even if it used a level shifter, its supply should be a DAC. Digital level shifters work for well known supplies and don't have very wide valid ranges. 0.2 to 3.3 V will require a DAC.

@Luis Henrique Rodovalho Earlier I was using this level shifter then I thought to look over std library level shifter here was the problem with 2 output one high and other low. Drawn waveform is the one I am trying to do something like that So as per your saying I can use that level shifter which is digital just have to connect DAC output to supply voltage vcc for range 0.2-5v ?

The DAC control signals are normal voltage levels for your input digital circuit. It will control a variable supply voltage.

@Luis Henrique Rodovalho I mean do I need to connect DAC output to supply voltage of level shifter . To get the expected result in picture

Rafeeq, The casual answer is yes. DAC output produces voltage and level shifter switches it on and off at the output. You may need an amplifier between DAC output and circuit output depending on the loads you plan to drive.

@Andrew Wright thank you I have successfully completed the simulation and it worked.