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???
10/02/06 06:39
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 		 #125569 - Power consumption, complexity and size
Responding to: ???'s previous message
Darren Heywood said:
Bipolar technology appears to be so much quicker and faster than NMOS/CMOS, but cpu manufactures still insist on using NMOS/CMOS, I wonder what the problem is?

Bipolar devices are current driven so they are more power hungry. Bipolar devices are more complex to fabricate so they cost more. Bipolar devices take up more die area so they cost more again.

They are electrically quieter than MOS which is why they are still used in op amps, RF and ADC/DAC products.

Ian



List of 93 messages in thread
TopicAuthorDate
Nmos versus Bipolar(TTL) technology            01/01/70 00:00      
   I remember when cpus were bipolar            01/01/70 00:00      
   NMOS?            01/01/70 00:00      
   Static power consumption            01/01/70 00:00      
      Mr OHM and MR AMPERE            01/01/70 00:00      
         Ohm and Ampere            01/01/70 00:00      
         74LSTTL versus 74HCMOS, as an example            01/01/70 00:00      
            Hi Kai,            01/01/70 00:00      
               Plonk!            01/01/70 00:00      
                  deleted, wrong place            01/01/70 00:00      
               mindless babble            01/01/70 00:00      
                  None taken            01/01/70 00:00      
               Hi Kai,            01/01/70 00:00      
         Do not forget Mr. Real World            01/01/70 00:00      
            Hi there,            01/01/70 00:00      
               Are you trying to get..            01/01/70 00:00      
                  Thank you Kalpak....            01/01/70 00:00      
                     impedance            01/01/70 00:00      
                        Hi Terry, thanks for the input....            01/01/70 00:00      
                           what has that to do with the subject you raised            01/01/70 00:00      
                              Hi Terry,            01/01/70 00:00      
                                 Becuase it is not DC            01/01/70 00:00      
                                    Now we are getting somewhere, thanks to Neil            01/01/70 00:00      
                                       you .... .... why can you not accept            01/01/70 00:00      
                                       Wrong Question            01/01/70 00:00      
                                 If you find this power vs frequency concept            01/01/70 00:00      
                              nothing, of course            01/01/70 00:00      
         if ignorance is bliss            01/01/70 00:00      
         Could you please clear some points?            01/01/70 00:00      
            Hi Kai            01/01/70 00:00      
               put that butt away            01/01/70 00:00      
                  Ehm... trolling a bit?            01/01/70 00:00      
               Ive told you Mr Heywood is            01/01/70 00:00      
               proportional versus f            01/01/70 00:00      
         what transpires is that you are an idiot Darren            01/01/70 00:00      
            a better idea            01/01/70 00:00      
            Hi JEZ,            01/01/70 00:00      
               No I was refering to you being an idiot            01/01/70 00:00      
   It\'s the weed again ... ...            01/01/70 00:00      
      Hello, it's Darren again...            01/01/70 00:00      
         Speed Power Product            01/01/70 00:00      
            Squares and circles            01/01/70 00:00      
               Schooling            01/01/70 00:00      
                  Hello Ian            01/01/70 00:00      
            Mr OHM and MR AMPERE laws violated??            01/01/70 00:00      
               No, I have better things to do.            01/01/70 00:00      
                  let me try, not that I think it will do any good            01/01/70 00:00      
         nope ... it's CMOS            01/01/70 00:00      
         babble, babble, babble            01/01/70 00:00      
   Power consumption, complexity and size            01/01/70 00:00      
   RC lowpass is used on ALE in some designs            01/01/70 00:00      
      Hello Frieder            01/01/70 00:00      
         one example please of a non-historic device            01/01/70 00:00      
      never seen that            01/01/70 00:00      
   Let's try this            01/01/70 00:00      
      In other words:            01/01/70 00:00      
      say absolutely nothing            01/01/70 00:00      
   App Note Explaining CMOS Power Dissipation            01/01/70 00:00      
      Darren will ignore this            01/01/70 00:00      
      Fair Comment??            01/01/70 00:00      
         impedance is not imps dancing            01/01/70 00:00      
            Microwave Ovens            01/01/70 00:00      
            Dancing AMPS???            01/01/70 00:00      
               You'd best ask an adult to explain this to you.            01/01/70 00:00      
                  why            01/01/70 00:00      
                     what I meant was one local to him            01/01/70 00:00      
               Acceptance            01/01/70 00:00      
                  Course            01/01/70 00:00      
                     but Darren does not have a picture            01/01/70 00:00      
         Think about it this way            01/01/70 00:00      
            oh no            01/01/70 00:00      
            it's also the switching transient ...            01/01/70 00:00      
               Mr OHM again            01/01/70 00:00      
                  Mr Idiot again            01/01/70 00:00      
                  Ohm's Law            01/01/70 00:00      
                     Don't be naive Ian            01/01/70 00:00      
            Hi David            01/01/70 00:00      
               sure            01/01/70 00:00      
                  Burning coil            01/01/70 00:00      
                     incorrect stupid babble again            01/01/70 00:00      
                     Are we finally getting somewhere?            01/01/70 00:00      
                        Hi Rob            01/01/70 00:00      
                           "pure"            01/01/70 00:00      
                           practice what you preach.            01/01/70 00:00      
               huh?            01/01/70 00:00      
                  Hi David            01/01/70 00:00      
                     The End.            01/01/70 00:00      
               Well np            01/01/70 00:00      
                  Hi Steve,            01/01/70 00:00      
                     Cars            01/01/70 00:00      
                        not even the farthing, I'm sure            01/01/70 00:00      
                     Size            01/01/70 00:00      
               Hey Darren            01/01/70 00:00      

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