<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content="text/html; charset=iso-8859-2" http-equiv=Content-Type>
<META name=GENERATOR content="MSHTML 8.00.6001.23588"></HEAD>
<BODY>
<DIV dir=ltr align=left><SPAN class=586263107-03092018><FONT color=#0000ff
size=2 face=Arial>Oh yeah, you're right, there is another 4.5k resistor from the
internal connection to the control pin, making 5k. It was late and I read
the schematic stupidly.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=586263107-03092018><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=586263107-03092018><FONT color=#0000ff
size=2 face=Arial>I'll leave them open. I left them open on the last
oscillator I built, and nothing bad happened, and of course, they've been left
open on just about every Dixie and Rubicon in existence, and these work just
fine.</FONT></SPAN></DIV><BR>
<BLOCKQUOTE
style="BORDER-LEFT: #0000ff 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px"
dir=ltr>
<DIV dir=ltr lang=en-us class=OutlookMessageHeader align=left>
<HR tabIndex=-1>
<FONT size=2 face=Tahoma><B>From:</B> Roman [mailto:modular@go2.pl]
<BR><B>Sent:</B> Sunday, September 02, 2018 10:44 PM<BR><B>To:</B> David G
Dixon; synth-diy@synth-diy.org<BR><B>Subject:</B> Odp: Re: [sdiy] Outputs
grounded! Re: SSI2164 datasheet updated<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV>Are you saying you want to make strong POSITIVE feedback over 2164 and
only slightly dump it to GND via 5k resistor (or 10k in SSI part)? Control
input may be grounded by 500 ohm, but externally accessible is only via 2nd
resistor so 5k. Nevertheless that's nothing compared to 0 ohm positive
feedback, so it will saturate at either positive or negative depending on
offset current direction.<BR></DIV>
<DIV>I think in this case it's better to leave them open than do such a
thing.<BR></DIV>
<DIV><BR></DIV>
<DIV>Roman<BR></DIV>
<DIV class=nh_extra>
<P>Dnia 3 września 2018 07:12 David G Dixon <dixon@mail.ubc.ca>
napisał(a):<BR></P>
<BLOCKQUOTE
style="BORDER-LEFT: #999 2px solid; MARGIN: 0px; PADDING-LEFT: 8px"
class=nh_quote>
<DIV id=gwpa1eb7d14>
<DIV id=gwpa1eb7d14h>
<DIV class=gwpa1eb7d14b data-message-body="true">
<DIV><SPAN class=gwpa1eb7d14_601440405-03092018><SPAN
style="FONT-FAMILY: Arial" class=font><SPAN style="FONT-SIZE: 13px"
class=size><SPAN style="COLOR: #0000ff" class=colour>Hey
Team!</SPAN></SPAN></SPAN></SPAN><BR></DIV>
<DIV><SPAN class=gwpa1eb7d14_601440405-03092018><SPAN
style="FONT-FAMILY: Arial" class=font><SPAN style="FONT-SIZE: 13px"
class=size><SPAN style="COLOR: #0000ff"
class=colour></SPAN></SPAN></SPAN></SPAN><BR> </DIV>
<DIV><SPAN class=gwpa1eb7d14_601440405-03092018><SPAN
style="FONT-FAMILY: Arial" class=font><SPAN style="FONT-SIZE: 13px"
class=size><SPAN style="COLOR: #0000ff" class=colour>I am building an
oscillator, and one of the 2164s has an unused VCA. In the layout as
it is, the pins are simply unconnected. It would require a major
layout adjustment to bring ground to these
pins.</SPAN></SPAN></SPAN></SPAN><BR></DIV>
<DIV><SPAN class=gwpa1eb7d14_601440405-03092018><SPAN
style="FONT-FAMILY: Arial" class=font><SPAN style="FONT-SIZE: 13px"
class=size><SPAN style="COLOR: #0000ff"
class=colour></SPAN></SPAN></SPAN></SPAN><BR> </DIV>
<DIV><SPAN class=gwpa1eb7d14_601440405-03092018><SPAN
style="FONT-FAMILY: Arial" class=font><SPAN style="FONT-SIZE: 13px"
class=size><SPAN style="COLOR: #0000ff" class=colour>However, I then
realized something: The control pin is connected internally to ground
through a 500-ohm resistor. Hence, simply connecting all three pins of
the unused VCA together would effectively ground every pin, would it
not? This can be done with a very simple
kludge.</SPAN></SPAN></SPAN></SPAN><BR></DIV></DIV></DIV></DIV>
<DIV id=gwp6d42e41f>
<DIV>_______________________________________________<BR></DIV>
<DIV>Synth-diy mailing list<BR></DIV>
<DIV><A href="mailto:Synth-diy@synth-diy.org"
nh-compose-link="">Synth-diy@synth-diy.org</A><BR></DIV>
<DIV><A href="http://synth-diy.org/mailman/listinfo/synth-diy" target=_blank
nh-safe-redirectdata-saferedirecturl="https://zasobygwp.pl/redirect?sig=b71c8251b717ba551dbce4e296c1ab7f5c1f2f55b0f607f673fe803609e81823&url=aHR0cDovL3N5bnRoLWRpeS5vcmcvbWFpbG1hbi9saXN0aW5mby9zeW50aC1kaXk=&platform=desktop&brand=o2">http://synth-diy.org/mailman/listinfo/synth-diy</A><BR></DIV></DIV></BLOCKQUOTE></DIV>
<DIV><BR></DIV></BLOCKQUOTE></BODY></HTML>