[sdiy] DG413 question

Dave Manley dlmanley at sonic.net
Thu Feb 1 00:48:12 CET 2007


JH. wrote:
>> I haven't used the part, but looking at the data sheets, it is safe to 
>> connect VL to V+.  However connecting GND to -15 violates the max V+ to 
>> GND spec (25V in the AD datasheet, interestingly the other data sheets 
>>from Maxim and Intersil spec it the other way GND to V- max 25V).
> 
> I checked, the ones I have are from Intersil. Should be ok then.

The specs aren't very clear, but I don't think I would try it unless you 
don't mind a dead part.

Since it is known to be safe to ground the GND pin, and the logic inputs 
will work properly even if they swing +/-15V, I don't think there's 
anything to gain by connecting -15V to the GND pin (except one less wire 
:-).

-Dave



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