Variable ramp generator

[mbartkow at ET.PUT.Poznan.PL]

Martin Czech wrote:

> :::Tietze & Shenk (among many others) show, how to built a dividing
> :::network by the use of a multiplicator (I think an OTA should do)
> :::in a feedback of an inverting amplifier:

> In this case you should have an extra look at temperature effects.
> I think such a cheap multiplier will be quite temperature
> dependend.

Really ???
I always thought that multipliers are virtually temperature independent,
since the two internal dependencies mutually cancel each other if every-
thing is on one chip...
Anyway, even with some temperature-related errors, it is only for ampli-
tude scaling and would eventually slightly affect the waveshape, not the
pitch. Should not be a big problem, imho.

best regards,

mb


--

Maciej Bartkowiak, PhD
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