PSN-L Email List Message

Subject: Re: Op amp front end noise
From: John Popelish jpopelish@........
Date: Thu, 10 Mar 2005 19:20:23 -0500

George Bush wrote:
> I am building a mercury-cup tiltmeter and it uses the INA121 opamp. I would
> be interested in seeing your analysis of it's noise also.

I will include it in my survey, but it appears to be better with very
high impedance signal sources.  I am interested in how the tiltmeter
connects to the amplifier.  What sort of signal source impedance does
this represent?  Do you need the instrumentation amplifier
differential configuration?

John Popelish

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