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resistor [2012/07/01 22:04] mcmasterresistor [2012/07/01 22:07] mcmaster
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-====== Always on transistor ======+====== Depletion load ======
  
 These are arranged with the transistor tied to be always on.  A MOSFET is classified into 3 areas of operation: These are arranged with the transistor tied to be always on.  A MOSFET is classified into 3 areas of operation:
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 {{:mcmaster:resistor:pmos_pulldown_sch.png}} {{:mcmaster:resistor:pmos_pulldown_sch.png}}
  
-(FIXME: look into analysisThe metal is VDD (-10V). For PMOS, cutoff occurs when VGS > Vth and assume Vth = -3V or something like that.  If VGS is 0 the resistor does nothing as there is no potential difference.  Now note that since VG = VD and so VGS = VDS.  We are in the triode region if VDS > VGS - Vth and so if 0 > 0 - -3V or 0 > 3V)+(FIXME: compare with analysis at [NMOS logic design] The metal is VDD (-10V). For PMOS, cutoff occurs when VGS > Vth and assume Vth = -3V or something like that.  If VGS is 0 the resistor does nothing as there is no potential difference.  Now note that since VG = VD and so VGS = VDS.  We are in the triode region if VDS > VGS - Vth and so if 0 > 0 - -3V or 0 > 3V)
  
  
 
resistor.txt · Last modified: 2013/10/20 14:59 by 127.0.0.1
 
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