[sdiy] CEM3340 question

[Malte Horstmann]

I’m working on a synth concept that uses the 2130 and I’ve been trying to expand this circuit in order to be able to use all 5 mixer channels.
The hardest part (for me) is to keep the parts count low. 
Right now I’m down to 10 opamps (instead of 3 opamps in the original circuit).


> Am 03.12.2020 um 11:22 schrieb Tom Bugs <admin at bugbrand.co.uk>:
> 
> Not entirely related, but the new SSI2130 datasheet has a useful 3-way voltage generator -- designed for the onboard wave-mixer so you'd need to implement VCAs to work with the 3340.
> http://www.soundsemiconductor.com/downloads/ssi2130datasheet.pdf
> 
> On 03/12/2020 09:29, Joel B wrote:
>> The Behringer Neutron uses two 3340s but it has a feature that I’m not seeing in the CEM3340 data sheet - voltage controlled wave shape - you can sweep between four different shapes. It’s a little glitchy unless you modulate at a fairly low frequency. Yet when I look at what is available otherwise, especially in Eurorack format using this chip, nothing has that feature.
>> 
>> How did Behringer implement that?
>> 
>> Joel
>> 
>> Sent from my iPhone
>> 
>> _______________________________________________
>> Synth-diy mailing list
>> Synth-diy at synth-diy.org
>> http://synth-diy.org/mailman/listinfo/synth-diy
>> Selling or trading? Use marketplace at synth-diy.org
> 
> -- 
> BugBrand LTD
> UK company No. 07199808
> VAT No. GB 988 2629 57
> 1 Ninetree Hill
> BRISTOL BS1 3SB
> United Kingdom
> www.bugbrand.co.uk
> 
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at synth-diy.org
> http://synth-diy.org/mailman/listinfo/synth-diy
> Selling or trading? Use marketplace at synth-diy.org