[sdiy] Speaking of Vanishing OTAs

[Bob Weigel]

A circuit which performs an integral on a bipolar square input with a 
control input for the integral "rate" tied to a frequency to voltage 
converter with appropriate compensations or just calculated from the 
control voltage if directly available.  (eg. if you are using divide 
down you'd have to go with the frequency to voltage converter).  I think 
all that can be done with just op amps, but I haven't tried it.  
Anyone?  -Bob

Scott Gravenhorst wrote:

>Any comments on what our options are for triangle VCO cores in the absence
>of OTAs?
>
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