AW: [sdiy] uA726, heated pairs...

[Ullrich Peter]

>There is the little known National Semiconductor app note AN-299 (1986?), 
>where an LM3046 transistor array is used to provide a heated pair for a VCO.
>
>I've tried it, but it seems to me that there was a change in chip manufacture, 
>and it doesn't work as advertised. The substrate pin is the problem.
>
>Just a note for fans of the uA726.

The link to this AppNote:
http://www.national.com/an/AN/AN-299.pdf

Ciao
Peter

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