[volt-nuts] Homebrew DVM
timka2k at yandex.ru
Thu Nov 10 17:17:01 UTC 2011
AN-260 is a very bad example of slow medium scale ADC.
I think that 130 db SNR ADS1282 is much better. Also, 8,5-digit Solartron 7081
have a simple and cheap delta-sigma ADC with 0.06 ppm noise and 51 sec.
Thursday, November 10, 2011, 8:20:58 PM, you wrote:
RE> 8.5 digits with averaging.
RE> I did consider that but the ADCs I am familiar with only have a 5V input
RE> range so range resistors would be required, not desirable for me. Also,
RE> they won't directly take the 7.2V ref input from a LTZ1000. Plus the AN-260
RE> circuitry is not too complex. Otherwise, I agree with you.
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