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The difference is in how the output stage was biased. If I remember
correctly, I think the LM13600 took its bias current off the Ibias
control current, so it variaed as the control current varied. This
caused control feedthrough problems. The LM13700 uses a fixed bias. <br>
You should be able to substitute the LM13700 for the LM13600 no problem
- you might even get a little better performance. If you are not using
the output stage, they will be identical.<br>
<br>
Ken MacBeth wrote:<br>
<blockquote type="cite"
cite="mid20030812102631.89864.qmail@web11006.mail.yahoo.com">
<div>Hi List!</div>
<div>I wonder if any one can help on this one. What is the difference
in using an LM13600 and a LM13700 in say the MS20 filter or in a State
Variable- can the they swapped around? I know that there is something
to do with the output buffers, but that's it!</div>
<div>As always, any help appreciated. I wish I knew more than I do!</div>
<div>Regards, Ken<br>
<br>
</div>
<br>
<br>
<a class="moz-txt-link-freetext" href="http://www.macbethstudiosystems.com">http://www.macbethstudiosystems.com</a><br>
Home of the M3X Analogue synthesizer...
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<br>
<pre class="moz-signature" cols="72">--
Scott Bernardi
<a class="moz-txt-link-abbreviated" href="mailto:sbernardi@comcast.net">sbernardi@comcast.net</a></pre>
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