Re: Transmission Gate question

On 2006-01-31, Angmor <angmor@xxxxxxxxx> wrote:
> I've been staring at a transmission gate circuit for a while trying to
> figure out how it works and I'm not making any progress.  The problem
> we have (yes, it's a homework problem) is to determine the on
> resistance for the specific gate we've been given.  The circuit diagram
> is basically just an nmos and a pmos connected in parallel.  The input
> side (I know they're interchangable) is set to 5V and both of the fets
> are on (5v & 0v gate for n/p, respectively).  No output voltage is
> given.  I've searched for a while on google trying to find helpful
> information, but all I can find is that the input signal is supposed to
> pass through to Vout so that Vout is almost equal to Vin.
>
> My question is... How can I determine the output voltage?   I can't
> determine the transistor mode or currents without the output voltage,
> and if I can't do that I cannot determine the on resistance.  I am not
> asking for an answer to my problem, I would just like a nudge in the
> right direction if possible.  This problem is driving me crazy.

attach a reasonable load to the output.

the on-resistance may somewhat load-dependant.

Bye.
   Jasen
.

Relevant Pages

  • Re: Transmission Gate question
    ... >I've been staring at a transmission gate circuit for a while trying to>figure out how it works and I'm not making any progress. ... I've searched for a while on google trying to find helpful>information, but all I can find is that the input signal is supposed to>pass through to Vout so that Vout is almost equal to Vin. ... I can't>determine the transistor mode or currents without the output voltage,>and if I can't do that I cannot determine the on resistance. ...
    (sci.electronics.basics)
  • Transmission Gate question
    ... I've been staring at a transmission gate circuit for a while trying to ... pass through to Vout so that Vout is almost equal to Vin. ... How can I determine the output voltage? ... and if I can't do that I cannot determine the on resistance. ...
    (sci.electronics.basics)
  • Re: Transmission Gate question
    ... is to determine the on resistance for the specific gate we've been given. ... The input side is set to 5V and both of the fets are on (5v & 0v gate for n/p, ... I've searched for a while on google trying to find helpful information, but all I can find is that the input signal is supposed to pass through to Vout so that Vout is almost equal to Vin. ... How can I determine the output voltage? ...
    (sci.electronics.basics)
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