Below is just a sample of MMD's VCXO product offering. Please check with your MMD representative for any specific VCXO requirements that you may have.
Preview
VCXO MMD Series
OUTPUT TYPE
Package
Frequency
Range
View
PDF
Revision
Date
RoHS Compliant
0 and fre>0 and pac>0 and ptype='osc' and otype=61 and svoltage>0 and ltype>0 ";
//echo $query;
$result = mysql_query($query) or die('Query failed: ' . mysql_error());
$total2 = mysql_num_rows($result);
while ($line = mysql_fetch_assoc($result)) {
$opid=$line['skuid'];
$pack=$line['pack'];
$frange=$line['frange'];
$rohs=$line['rohs'];
$series=$line['series'];
$pdf=$line['pdf'];
$thumb=$line['thumb'];
$pic=$line['pic'];
$feature=$line['reel'];
$revision=$line['revision'];
$svolt=$line['svoltage'];
$otype=$line['otype'];
$ltype=$line['ltype'];
$spic=$line['spic'];
$pdfpos = strpos($pdf, "ploads");
if ($pdfpos) {
$pdf="admin/".$pdf;
}
if ($qpro==osc and $qosc==NULL) {
$fea=$flist[$svolt]." | ".$flist[$otype]." | ".$flist[$ltype];
$prodtype="Oscillators:";
}
$fea=$flist[$svolt]." | ".$flist[$otype]." | ".$flist[$ltype]." | ".$feature;
if ($qpro==osc and $qosc==61) {
$fea=$flist[$svolt]." | ".$flist[$otype]." | ".$flist[$ltype];
$prodtype="VCXO:";
}
if ($qpro==osc and $qosc==62) {
$fea=$flist[$svolt]." | ".$flist[$otype]." | ".$flist[$ltype];
$prodtype="OCXO:";
}
if ($qpro==osc and $qosc==63) {
$fea=$flist[$svolt]." | ".$flist[$otype]." | ".$flist[$ltype];
$prodtype="TCXO:";
}
if (strlen($pdf)<4) {
$pdfval="";
} else {
$pdfval="";
}
echo <<
$series
$pack
$fea
$frange
$pdfval
$revision
$rohs
END;
}
if (!$total2) {
echo <<
There's no product in the requested search criteria. Search Again »
END;
}
?>
VCXO - voltage-controlled crystal oscillator
A VCXO is used when the frequency of operation needs to be adjusted by a relatively small amount or when exact frequency or phase of the oscillator is critical, or, by applying a varying voltage to the control input of the oscillator, to disperse radio-frequency interference over a range of frequencies to make it less objectionable. Typically the frequency of a voltage-controlled crystal oscillator, VCXO can only be varied by a few tens of parts per million (ppm), because the high Q factor of the crystals allows only a small "pulling" range of frequencies to be produced.
";
} else {
$pdfval="