[sdiy] SSM2164 protection

[mark verbos]

-----Original Message-----
>From: "David G. Dixon" <dixon at interchange.ubc.ca>
>Sent: Mar 7, 2011 4:49 PM
>To: 'Neil Johnson' <neil.johnson97 at ntlworld.com>, synth-diy at dropmix.xs4all.nl
>Subject: Re: [sdiy] SSM2164 protection
>
>> Over the last few days Oscar and myself have been pushing 
>> this investigation further.
>> With a sprinkle of inspiration backed up by excellent 
>> experimentation we have come up with a very simple solution: 
>> one Schottky diode.
>> 
>> http://www.milton.arachsys.com/nj71/index.php?menu=2&submenu=2
>> &subsubmenu=3
>
>I love you, Neil Johnson and Oscar Salas!
>
>In my layouts, since the 2164 V- pin is on the "wrong" side of the chip (the
>same side as the V+ pin), I have to connect it to the rail with a jumper.
>Replace that jumper with a Schottky diode, and I'm done!
>
>Thanks 10^6 for taking this to such a satisfying conclusion.


Be careful there, David. The diode needs to go from -15 to ground not between -15 and the chip's supply pin.

Mark