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A/D buffers

 
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dpark
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A/D buffers
PostPosted: Wed Nov 12, 2008 7:03 pm     Reply with quote
Hello,
Any one have suggestions for buffering 4 incoming 0-5 signals. I have precious little space and these signals will be applied in the field from various sources. I am reluctant to connect directly to a PIC analog input without something buffering the outside world from the device. No gain or filtering is required. any ideas would be greatly appreciated.
Thanks
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Wed Nov 12, 2008 7:25 pm     Reply with quote
Quote:
No gain or filtering is required

Do a Google search for this:
Quote:
opamp voltage follower

Look at "rail to rail" amplifiers. You might need a negative supply.
http://ww1.microchip.com/downloads/en/DeviceDoc/adn009a.pdf
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