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Old 11th February 2006, 09:07 PM   #11
jcx is online now jcx  United States
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tried some digitizing sw - "plot digitizer" on sourceforge

I suppose the main lesson of AI is how hard it is to make a computer do things that are obvious and trivial for humans but it seems like these programs could be a little more automated - lots of hand trimming of the points was required

mathcad for display:

jfet solid lines, low noise cmos dashed

Input Voltage Noise vs Frequency from manufacturer's data sheets

Click the image to open in full size.

no warranty of correctness expressed or implied but it still looks like the ad743 is the one to beat - thank Scott Wurcer
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Old 12th February 2006, 08:16 AM   #12
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Mr. Ruschkowski brought this opamp (AD743, AD745) to my attention. Later I also discovered that Walt Jung recoemmend it as RIAA amp in his book "Opamp applications". Maybe I'll test AD745, it looks interesting.
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Old 4th April 2011, 06:42 PM   #13
JoelM81 is offline JoelM81  United States
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Quote:
Originally Posted by jcx View Post
tried some digitizing sw - "plot digitizer" on sourceforge
Is there a spreadsheet to go with that?
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