Ramp Def. ??

Hello Ahmed:

   It's the 20% to 80% of the voltage swing. Specifically
the Dt number is calculated as (for rising wavefront)....

(time at which voltage waveform crosses [.8(voltage swing) +
starting voltage]) - (time at which voltage waveform crosses
[.2(voltage swing) + starting voltage]).

         Hope that helps.

           Regards,
           Stephen Peters
           Intel Corp.

Hello IBIS people

Is ramp rate defined as the time it takes the output to go:
(a) 20% to 80% of output final value
 or
(b) 20% to 80% of output voltage swing*

* I define voltage swing as the difference
  between final value and initial value.
 
For example;
Say, the output swings 1 to 5 volts. | 5 v ____
To calculate the ramp rate do I use | /
(a) 20% to 80% of 5 volts | /
 or | /
(b) 20% to 80% of 4 volts | 1v ____/
 
Regards, Ahmed.
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|Ahmed Omer | Advanced Interconnect Systems Labs |
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Received on Wed Oct 23 18:29:30 1996