Hello, I am designing an IC amplifier and i want to remove the DC component from the output. I thought of using a capacitor. How can i implement a capacitor using a MOSFET. I heard i can connect the drain to source but how do i control the equivalent capacitance?
MOSFET capacitor
Dec 30, 2005
4 Replies
MOSFET capacitance is simply the gate capacitance.
HOWEVER: There is a series resistance component which varies with bias, and it is NOT modeled by the MOSFET Spice model alone.
...Jim Thompson
| James E.Thompson, P.E. | mens |
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"Winners never quit, quitters never win", Jack Bradley Budnik ~1956
Maybe you could elaborate on the exact meaning of " I am designing an IC amplifier " first before going any further ?
Graham
I think you need to spend some more time learning the process. You may have a capcitor option wich gives less voltage dependence by using a high implant, or possibly poly-poly capacitor.
Be careful when us> Hello,
If you need to ask this, it would be best to forget it.
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