Subject:
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LM324
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Thu, 13 Feb 1997 18:03:18 GMT
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Original-From:
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don day <don@rgbSTOPSPAMMERS.com>
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Reply-To:
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don@rgb.^NoMoreSpam^com
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Viewed:
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1183 times
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The latest expansion board schematic shows an LM324 for the
high impedance input buffers.
Although the LM324 is cheap and available, its input and output voltage
ranges are limited to 0 to 3.5V
(yes, probably a little more with any real part).
If the HC11's A/D converter is digitizing a 0 to 5.0V
range this could lose up to 30% of the possible codes.
A more expensive pin compatible quad amp, like the MAX494 will
get much closer to the full 5V range for both input and output.
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