[volt-nuts] Homebrew DVM

[Михаил]

Hi, Randy!
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.
integration time.


Mickle T.

Thursday, November 10, 2011, 8:20:58 PM, you wrote:
RE> 8.5 digits with averaging.
RE>  
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.  
RE>  
RE> Randy