[SI-LIST] DDR SDRAM 857 CLOCK DRIVER
- From: evillaf@xxxxxxxxx
- To: si-list@xxxxxxxxxxxxx
- Date: Tue, 14 May 2002 19:02:32 +0000
Hi all,
I have a question about 857 output impedance. IDT app
note shows traces to be 60 ohm single ended, 120
differential. Is this x single ended, 2x differential
relationship necessary? Will 55 ohm single ended, 100
ohm differential work as well? In either case, the
differential termination at the end of the line will be
matched to the differential characteristic impedance (?).
Ellis
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