piclist 2002\08\24\200138a >
Thread: AD reading problems 16f877
www.piclist.com/techref/microchip/devices.htm?key=16F
face picon face BY : Jinx email (remove spam text)



Your "fuzzy" results sounds like the LM35 is not being loaded. The
app notes for it show a load resistor, anything from 200R to 10k,
and also RC or series R for capacitive loads (eg long cables). It's
got 0R1 impedance at 1mA o/p so it should have enough oomph
for the PIC's AD to read. More info here (303kB)

eehttp://www.eng.ohio-state.edu/~passino/LM35.pdf

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