> Many reasons could be for that, first let me know witch type is your A/D converter? SAR Sigma Delta? and who is manufucter of that ADC. > > do you have buffered imputs with amplifires? > how many digits of readings are unstable? - Made by "Analog" (AD7666) - 16-bit Unipolar - buffer on the input, - External Reference The instability can be from 2 to 5 bits, or even 20 with switching supplies.
Message
Re: External ADC Problem
2005-02-10 by Leighton Rowe