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Subject: My a/d result jump up and down,why?

Date: 05/20/03 at 12:33 PM
Posted by: sarcophile
E-mail: sarcophile@etang.com
Message Posted:

I designed a circuit,which is for measuring temperature. I used 12bit a/d converter in TI's msp430 mcu,the result of a/d always jump up and down. In 16 samples,the max value is greater than min value about 8 or 10. Why? And how can i avoid this? The op-amp is op291. I can send you the SCH and PCB, if needed. sarcophile@etang.com Thanks alot.

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