Maxx BRM-1A and CA3946

[tomg]

On 04-Aug-98, jorgen.bergfors at idg.se wrote:
>Looking at the schematics for this ring modulator (
>http://www2.vivid.net/~tomg/maxx/page_026.html), I notice that pin 7 of the 
>CA3046 is at the lowest potential. I have got the impression that pin 13 is 
>connected to the substrate and must be at the lowest potential. Is this 
>correct? What happens if you violate this? Will the chip self-destruct or
just

>malfunction? Does the Maxx BRM-1A really work?

>/Jorgen

Yes it the Maxx BRM-1A really works. The 3046 will not blow up! The NS app
notes does mention the pin 13 thing, so I guess I should rearrange it  but no
explosions so far. It says "to maintain proper isolation and normal
transistior action" nothing about self destruction. If it adds crosstalk it
may even help in a balance-modulator.

-tg