From: davidj@rahul.net (David Josephson)
Subject: Re: MICROPHONE PRE-AMP/LOW NOISE/PHANTOM POWERED
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In <C5JJJ2.1tF@cmcl2.nyu.edu> ali@cns.nyu.edu (Alan Macaluso) writes:

>I'm looking to build a microphone preamp that has very good low-noise characteristics,  large clean gain, and incorportates phantom power (20-48 volts (dc)) for a PZM microphone.  I'm leaning towards a good, low-cost (??) instrumentation amplifier to maintain the balanced input from the microphone, for its good CMRR, internal compensation, and because i can use a minimal # of parts.  

>Does anyone out there have any experience, suggestions, advice, etc...that they'd like to pass on, I'd greatly appreciate it.


>---
>A l a n  M a c a l u s o		 	PURPLE MOON GIANTS
>ali@cns.nyu.edu  				158 E. 7th. St. #B5
>(212) 998-7837					NYC  10009
>						(212) 982-6630

>		


Without doing anything really tricky, the best I've seen is the
Burr-Brown INA103. Their databook shows a good application of this
chip as a phantom power mic pre.

>	        
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