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ssn minimization in LVDS transmitter (Read 3603 times)
justdoit
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IIT-Kharagpur,India
ssn minimization in LVDS transmitter
Dec 03rd, 2007, 9:18pm
 
Hi all,
I am designing a LVDS transmitter .I want to minimize peak current flowing through DVDD supply(to minimize the SSN noise ) .In order to achieve this wat is the criteria for the signals that drive the transmitter switches w.r.t to thier timing issues
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Haribabu,
M.tech.
IIT-Kharagpur,
India.
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email_gz
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gaoz.mail@gmail.com
Re: ssn minimization in LVDS transmitter
Reply #1 - Dec 8th, 2007, 4:17am
 
careful design symmetry (delay path,cap loding...)of differential siganls which drive the LVDS switchs, and also slew rate should not too fast. I think Smiley
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fonseca.ha
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Re: ssn minimization in LVDS transmitter
Reply #2 - Feb 2nd, 2008, 10:19am
 
A comment about speed of the edges when driving the steering devices of the LVDS driver. A possible problem is that you may end up with too much jitter in the TX.

is DVDD your digital supply?
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