Subject: Ramp Def. ??

From: [email-masked] (Ahmed Omer)
Date: Wed, 23 Oct 1996 18:17:25 -0500

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.
|---------------------------------------+------------------------------------|
|Ahmed Omer                             | Advanced Interconnect Systems Labs |
|E-MAIL: [email-masked]  | Semiconductor Products Sector      |
|      : [email-masked]       | M O T O R O L A, Inc.              |
|Phone:	 512-933-2247                   | 3501 Ed Bluestein Blvd  MDrop: F36 |
|Fax:	 512-933-5845                   | Austin, TX 78721                   |
|---------------------------------------+------------------------------------|