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<DIV><FONT face=Arial size=2>Ked tak uvazujem, pokial je dostatocna amplituda,
tak 80MHz je uz dostatocna hrana pre CPLD a mozno netreba robit
nic.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Milan</FONT></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=tskokan@volny.cz href="mailto:tskokan@volny.cz">Tomáš Skokan</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=hw-list@hw.cz
href="mailto:hw-list@hw.cz">hw-list@hw.cz</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, February 16, 2005 6:53
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> prevodnik sinusovka obdelnik
80MHz</DIV>
<DIV><BR></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-US
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Zdravim,<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-US
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">mam nasledujicim problemem: na
vystupu LVDS prevodniku dostavam CLK signal se sinusovym prubehem, timto
signalem potrebuji ridit CPLD, potrebuji tedy obdelnikovy prubeh.
Problem je v celkem vysoke frekvenci 80MHz. Cele zarizeni by melo pouzivat
napajeni 5V/3.3V/2.5V, nerad bych tam daval nejaky dalsi
prevodnik.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-US
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Zatim jsem zkousel vyrobyt
potrebny prubeh uzitim 74lvc2g14 (dve hradla, invertor se Schmittovym K.O.),
dalsi pokus byl s OZ OPA357 zapojenym jako Schmittuv K.O. a posledni s dvojici
vf tranzistoru zapojenych jako Schmittuv K.O.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-US
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Problem je s frekvenci, do radove
15MHz bez problemu, pote nepouzitelne.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-US
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-US
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Dekuji za jakoukoliv radu, ktera
me nasmeruje k vyreseni tohoto problemu.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-US
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-US
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Tomas Skokan
<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-US
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P></DIV><BR><BR>__________
Informacia od NOD32 1.1000 (20050216) __________<BR><BR>Tato sprava bola
preverena antivirusovym systemom NOD32.<BR><A
href="http://www.eset.sk">http://www.eset.sk</A><BR>
<P>
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