CEM3310 Rx and Cx choice

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mhelin
Learning to Wiggle
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Joined: Tue May 12, 2020 7:39 am

CEM3310 Rx and Cx choice

Post by mhelin » Tue May 12, 2020 7:48 am

CEMvelope - the ADSR of Sequential Circuits Pro-One by Frequency Central - is using an Rx = 22k and a Cx = 33n (as timing resistor and capacitor). Isn't that 22k too low a value? Datasheet recommends 24k minimum. I noticed this as I couldn't find a 33nF cap, and now I'd like increase the Rx a little bit to match the 22nF capacitor. Now 33*22 = 22*33 so a 33k resistor would be the one to use, yet the SCI Pro-One uses datasheet values. I suppose the difference is in the CV to current conversion so I cannot just use the datasheet values without changing anything else, right? [Incorrect forum, sorry, moderators please remove].

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