I've tried getting my head around the datasheet for some time, but with no luck... When you say master class, is that as in "fore thou art truly a master when thou understandeth ye 4780" ?<br><br><div><span class="gmail_quote">
On 1/13/06, <b class="gmail_sendername">Steve Ridley</b> <<a href="mailto:spr@spridley.freeserve.co.uk">spr@spridley.freeserve.co.uk</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
The LM3900 is a strange device, very different to ordinary opamps. You could download<br>aplication note AN-72.pdf from the National Semiconductor site if you want to learn a bit<br>more, but if you're used to conventional opamps, they turn your brain upside down at first.
<br>Also, search out old Serge and PAiA (especially PAiA 4700 series) schematics. The 4780<br>sequencer is an LM3900 master class...<br>Steve<br></blockquote></div>