[SI-LIST] Re: LVDS to TTL converter

> Date: Sat, 18 Jul 2009 16:33:26 +0530
> Subject: [SI-LIST] Re: LVDS to TTL converter
> From: prasad <hariprasad.palli@xxxxxxxxx>
> Hi Vignesh,
> 
> thank you for reply.  i am sorry that i mentioned TTL, which may not
> work properly at higher frequency.
> 
> my requirement is i have an analyzer systesm which does accept single
> ended clock with data for BER measurement. But my device is having
> Differential Clock, so i require a device which can covert LVDS to
> single ended signal. that system is having 50ohm input for the clock
> (with SMA connector).
> 
> please suggest ...
> 
> Best Regards, venkat

Venkat,

Thanks for the clarification. Translation to ECL might work. Are there 
separate CLK and DATA streams? Or is this data with embedded clock?

If you have a DC-balanced signal (such as data with embedded clock) you 
may be able to AC-couple the resulting ECL signal into your analyzer.

If you can't AC-couple (e.g. you have a random data stream), then you 
can use an ECL terminator.

These types of terminators and translators are available from others as 
well, but as far as our products go you could use:

1) PRL-425N, Differential Receiver with NECL outputs. The outputs can be 
used differentially or single-ended, with the caveat that if you use the 
NECL output singly you will want to terminate the unused complement into 
an AC-coupled 50 Ohm load using our PRL-ACT-50. You can AC couple the 
required NECL output into your analyzer using our PRL-SC-104.

2) PRL-425N plus a PRL-550NQ4X. The latter unit provides proper NECL 
termination, plus DC level shifting so you can run it directly into a 50 
Ohm system.

Please email me directly if you have more specific questions. Thanks!
-- 
Steven Kan                                (p) 310-515-5330 x24
Pulse Research Lab                        (f) 310-515-0068
1234 Francisco St., Torrance, CA  90502   (c) 818-620-3062
mailto:steven@xxxxxxxxxxxxxxxxxxxx
http://www.pulseresearchlab.com
Signal Buffering & Translation for Digital Design, Integration & Test

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