Hey all,
I feel dumb to ask this but I am having a very very (what I think is) basic MOSFET switch question. Can anyone tell me what the output Vout of the following schematic is going to be..
Vdc = -3V
| | | | ---+--- +----+ VIN | | +-------+ +------+- VOUT | | | | | | | -+-- c = 10pF -+--- vdc = 3V | | | l | | Gnd GND
I would expect the gate to be turned off and the Vout should be ideally zero + some leakage...I am trying to design switches for my DRAM which pass the voltage input to the output of the pass transistor when the control signal to the gate is turned on. I am trying to store that voltage on the capactitor. However, the problem I am getting is that the MOSFET is always on irrespective of the control gate voltage and I am always getting my Vout to follow Vin (almost) whatever I do...
I went back to my basics checked everything but I am really stumped. Can anyone change my line of thinking ? What am I doing wrong here???
Thanks a lot, Saran