[sdiy] LM13700

[harrybissell]

yeah... you might get a LOT of bleed from the ringmod
into the VCA.  I'd probablt try that carefully before
I got married to the idea

H^) harry

Chris Manders wrote:
> 
> I was thinking about using this Dual OTA device as
> well. I was intending to use one half as a basis for a
> main VCA, and the other half as use in a RingMod
> Circuit.
> 
> Would there be any problem doing this do you think?
> 
> Thanks
> Chris
> 
> --- Ray Wilson <raywilson at comcast.net> wrote:
> 
> > From the spec sheet. Note 4 seems applicable for
> > stabilizing an unused device. You can probably skip
> > applying bias (500uA) to the amplifier bias pin
> > though.
> >
> > Electrical Characteristics (Note 4) (Continued)
> >
> > Note 4: These specifications apply for VS = ±15V, TA
> > = 25°C, amplifier bias current (IABC) = 500 µA, pins
> > 2 and 15 open unless otherwise specified. The inputs
> > to the buffers are grounded and outputs are open.
> >
> > Note 5: These specifications apply for VS = ±15V,
> > IABC = 500 µA, ROUT = 5 kO connected from the buffer
> > output to -VS and the input of the buffer is
> > connected
> > to the transconductance amplifier output.
> >
> > Cheers
> >
> > Ray
> >
> >
> >   ----- Original Message -----
> >   From: Laurie Biddulph
> >   To: Synth-DIY
> >   Sent: Saturday, March 25, 2006 4:08 AM
> >   Subject: [sdiy] LM13700
> >
> >
> >   What is the best thing to do with unused pins on
> > the LM13700? ie I am not using one of the OTAs nor
> > either of the buffers
> >
> >   Best Regards
> >
> >   (Mr) Laurie Biddulph
> >   Mobile: 0404 846 943
> >
> >   Elby Designs
> >   ABN: 70 022 727 605
> >   http://www.elby-designs.com
> >
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