Mar 21, 2006 #1 E elbadry Full Member level 6 Joined May 6, 2005 Messages 347 Helped 72 Reputation 144 Reaction score 10 Trophy points 1,298 Location Egypt Activity points 3,884 MOS in the off state Dear all, Can I use a MOS in the off state to obtain an extremely large resistance ( in the order of 100 G ohms ). Or is there something incorrect about doing so? Regards, elbadry
MOS in the off state Dear all, Can I use a MOS in the off state to obtain an extremely large resistance ( in the order of 100 G ohms ). Or is there something incorrect about doing so? Regards, elbadry
Mar 22, 2006 #2 tamerakshar Full Member level 1 Joined Jan 29, 2006 Messages 97 Helped 10 Reputation 20 Reaction score 1 Trophy points 1,288 Activity points 2,268 Re: MOS in the off state hey, No you can't ,the mos will fail. TeE ThE EdE
Mar 22, 2006 #3 D darkk Member level 3 Joined Dec 9, 2005 Messages 58 Helped 4 Reputation 8 Reaction score 0 Trophy points 1,286 Activity points 1,789 MOS in the off state why do u need that huge resistance? you need to tell more.
Mar 22, 2006 #4 G gigle Junior Member level 1 Joined Feb 9, 2006 Messages 19 Helped 1 Reputation 2 Reaction score 0 Trophy points 1,281 Activity points 1,479 Re: MOS in the off state Considering junction leakage current, I would say "it is not practical"
Mar 22, 2006 #5 E elbadry Full Member level 6 Joined May 6, 2005 Messages 347 Helped 72 Reputation 144 Reaction score 10 Trophy points 1,298 Location Egypt Activity points 3,884 Re: MOS in the off state I need it to form a LPF with a very low cutoff. I use this filter to reduce noise I feel that, from a physical point of view, there is nothing wrong with using the MOS in off state. The resistor would be places in a path in which the current is already zero ( series with a MOS gate)
Re: MOS in the off state I need it to form a LPF with a very low cutoff. I use this filter to reduce noise I feel that, from a physical point of view, there is nothing wrong with using the MOS in off state. The resistor would be places in a path in which the current is already zero ( series with a MOS gate)
Mar 22, 2006 #6 G gevy Full Member level 6 Joined Nov 17, 2004 Messages 340 Helped 60 Reputation 120 Reaction score 29 Trophy points 1,308 Location Russia Activity points 2,167 Re: MOS in the off state You can to use switched capacitor as very high resistor, which has equivalent resistance R = 1 / ( C * F ), where F - frequency of switching.
Re: MOS in the off state You can to use switched capacitor as very high resistor, which has equivalent resistance R = 1 / ( C * F ), where F - frequency of switching.
Mar 22, 2006 #7 K kwkam Full Member level 5 Joined Feb 25, 2002 Messages 275 Helped 30 Reputation 60 Reaction score 13 Trophy points 1,298 Location Somewhere on earth Activity points 1,886 MOS in the off state You can try Poly without salex / P+ / N+ as resistor. The order of resistance in 10G Ohm
MOS in the off state You can try Poly without salex / P+ / N+ as resistor. The order of resistance in 10G Ohm