> >Sure it can.  You can easily attenuate the microphone input with passive
> >components before it reaches anything powered.  The real question is
> >what is the maximum voltage range your circuit must produce?  Does this
> >have to be single ended?  What is your circuit driving?
>
> Unless he wants to preserve a very large dynamic range and high S/N ratio
> at the same time. A microphone that outputs 35V pk must be kicked hard
> (maybe it's a piezo mike and can be used in current mode).

You should be easily able to preserve sufficient signal to noise ratio even
after attenuation by a factor of 4 or so.  If the 35V peaks are just spikes
when the microphone is dropped or whatever, then these don't need to be
considered part of the normal operating dynamic range.  That makes the
problem even easier, because it would be legitimate to clip those peaks.


********************************************************************
Olin Lathrop, embedded systems consultant in Littleton Massachusetts
(978) 742-9014, olin@embedinc.com, http://www.embedinc.com

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