<html><head/><body><html><head><meta name="viewport" content="width=device-width" /><meta http-equiv="Content-Type" content="text/vnd.ui.insecure+html;charset=utf-8" /></head><body dir="auto" style="overflow-wrap:break-word; word-break: break-word;"><div class="mail_android_message" style="line-height: 1; padding: 0.5em">Hi Joel,<br>
<br>
The symbols with the "f" inside are integrators, part of the LTC1059 (1 filter block) or LTC1060 (2 filter blocks) switched capacitor filter. If you look at the datasheets for the LTC1059 or LTC1060, you'll see that basically the upper half of the quadrature sine wave oscillator schematic is the switched capacitor filter.<br>
<br>
Justin<br>
</div><div class="mail_android_quote" style="line-height: 1; padding: 0.3em">On 12/05/2017, 7:52 PM Joel B <onephatcat@earthlink.net> wrote:<blockquote class="gmail_quote" style="margin: 0.8ex 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div><span></span></div><div>I’m trying to figure out how to convert this <div><a href="http://www.linear.com/solutions/1471">http://www.linear.com/solutions/1471</a> to a BOM, but I don’t really know what I’m doing, and some seems obscure, like what op amp to use, and those things with the F Inside them is that a schottkey diode? Also not clear to me if this is a 1v/octave VCO...</div><div><br /></div><div><span style="background-color: rgba(255, 255, 255, 0);">Can a sine wave VCO be built on the cheap? I want a bank of them...</span></div><div><br /></div><div>Joel</div><div><br /><div>Sent from my iPhone </div></div></div>_______________________________________________
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