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error correction in discrete I/V
error correction in discrete I/V
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Old 26th July 2008, 09:44 AM   #1
Onvinyl is offline Onvinyl
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Default error correction in discrete I/V

Hi,
I have once seen a discrete I/V converter stage with error correction (hawksford) around the input transistor. I can't remember where and who did it. Can anyone jump in and help?
Rüdiger
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Old 26th July 2008, 02:21 PM   #2
Dejak is offline Dejak  Finland
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Did you mean this?
http://www.essex.ac.uk/DCES/research...0amplifier.pdf
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Old 26th July 2008, 02:27 PM   #3
Onvinyl is offline Onvinyl
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That was it! Thanks a lot!
Rüdiger
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Old 9th January 2012, 01:45 PM   #4
tiefbassuebertr is offline tiefbassuebertr  Germany
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Quote:
Originally Posted by Dejak View Post
link is death - here the currently link
http://www.essex.ac.uk/csee/research...0amplifier.pdf
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Old 9th January 2012, 03:35 PM   #5
SoNic_real_one is offline SoNic_real_one  United States
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Interesting is that was published in 2000 when TL074 was the fastest "kid on the block" - 13 V/uS but with noise at 15nV/sqrt Hz and distortion at 0.01% (-80dB) and 3MHz gain bandwidth.

Today we have devices with SR at 20-55 V/uS, noise at 0.9-1.1nV/sqrt Hz and distortion at -114...-120dB and 55-100MHz gain BW. And we don't use R-2R DAC's anymore.

Limiting the rise time at an R-2R DAC output is simple done with just one capacitor across OpAmp feedback.

Last edited by SoNic_real_one; 9th January 2012 at 03:38 PM.
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