You are ok in this case, on both counts, iff the PIC shares the ground
with the AD7524 and with the virtual ground (0V) of the AD711.

Peter

On Sat, 8 Jun 2002, Arkady Skorokhod wrote:

>Hello all,
>
>Two exact situations to be precise:
>
>1. PIC is used to produce voltage level by means of PWM.
>So, one pin configured as out is connected to an in-pin of an op-amp
>arranged as an active low-pass filter. The op_amp (AD711 in this case) is
>powered from +/-15V rails.
>
>2.  8 out-pins of a PIC are connected to digital inputs of  a DAC (AD7524).
>The DAC is powered from +15V.
>
>The question in both cases: Is it OK (= safe for the PIC)? If not, how
>should I arrange these connections?
>
>Thanks.
>
>Arkady
>
>--
>http://www.piclist.com hint: The PICList is archived three different
>ways.  See http://www.piclist.com/#archives for details.
>
>
>

--
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