I am using a process with 15V capable MOSFETS and I want to connect a switched capacitor amplifier directly to input through ± 14V capable switch. Vdd is 3V.
Could you suggest me a suitable topology, paper, working circuit etc. I worry about particularly latch-up issues. Is it doable? thank you in advance.
when you are talking about that 14V capable MOSFET i believe you are talking about a discrete one... if it not discrete and if it is used in the wafer along with the 3V MOSFET then it is a very risky operation in terms of latchup.....
The ± 15V device is not discrete one, it exist in the process. Is there any circuit anybody know that works. I can come up with one but I need comments from people who has experience to share. thanks again.
Due to device breakdown voltage limit there is no room for boostrapping. Also this will require a large area HV charge pump. I am stuck with p-ch switch but there may be some clever way as add on to it to accomplish a neat solution.