[sdiy] Temperature Compensated Exponential Converter Using SSM2164

[Ian Fritz]

At 02:51 PM 8/29/2009, Magnus Danielson wrote:
>Ian Fritz wrote:
>>At 11:37 AM 8/29/2009, David G. Dixon wrote:
>>>   2164 is advertised to give more than five orders of
>>>magnitude of log conformance, and we only need about three for a VCO, so I'm
>>>not worried.
>>Conformance at what level?  Do they say?
>
>The SSM2164 has log control input and claim good conformance for 100 dB, 
>which cranks out as 5 orders of magnitude. If you look at the design you 
>will see that CV hits the control voltage input while the current input is 
>wired to -15V.

The question is how *accurate* is the conformance over the 5 
decades.  1%?  5%? ...

IOW, what does "good conformance" mean, exactly.