From: Tae-Kwang Jeon (firstname.lastname@example.org)
Date: Thu Nov 09 2000 - 11:09:34 PST
Here's a question on 3.3V PECL osc. termination.
I know that a Thevenin termination is used on the diff'l outputs of the osc.
But, what i'm concern is the case of AC-coupling to a 50ohm termination.
The qestions occurred to me are;
#1 Is there any recommended value of the coupling cap?
#2 How to size the resistors to DC-bias the PECL outputs? Is there also
any recommended range of size?
#3 In the case of #2, the resistors are supposed to be grounded, then what
if I make them in series?
Any comments would be appreciated.
TaeKwang Jeon, LSI Logic Corp.
1525 McCarthy Blvd Phone: (408) 433-6818
MS G-715 Fax : (408) 433-2840
Milpitas, CA 95035 Email: email@example.com
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