[SI-LIST] Re: impedance mismatch
- From: Chris Landrum x311 <clandrum@xxxxxxxxx>
- To: "'si-list@xxxxxxxxxxxxx'" <si-list@xxxxxxxxxxxxx>
- Date: Wed, 5 Nov 2003 08:59:22 -0500
Assuming that IC1 is the source and IC2 is the receiver ALL OF THE TIME, I
would simply series terminate the transmission line as close to IC1 as
possible. A 25 Ohm resistor should make up the difference.
-----Original Message-----
From: Chin, Dominic Kin Hii [mailto:dominic.kin.hii.chin@xxxxxxxxx]
Sent: Wednesday, November 05, 2003 3:05 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] impedance mismatch
Hi experts,
I am doing PCB design to communicate IC1 to IC2. The termination of
these ICs:
IC1 buffer: 25 ohm
IC2 buffer: 50 ohm
If I use a 50 ohm trace, there will be impedance mismatch and reflection
at IC1 or vice versa. How should I design PCB to cater for these
different terminated impedance ICs?=20
Thanks
Dom
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