The ADS1282 is a really cool part! After studying the ADS1282 datasheet is appears that *at best* it can achieve 130dB SNR which, by my calculations is effectively 21.3 bits - by the formula SNR=(6.02N+1.786)dB.
This got me thinking, are there any higher performing "24 bit" ADCs we should look at for our "nuttery". One that I found is the Linear LTC2440 (and others in the family). It claims, at its highest resolution, 24.6 effective bits. That said, I am having trouble comparing SNR directly. I need to read more to understand how to convert its noise spec - 200nV RMS noise - to a SNR dB figure. Andy Bardagjy bardagjy.com On Tue, Jan 29, 2013 at 4:43 AM, Тимофеев Михаил <[email protected]> wrote: > The ADS1282 offers outstanding specification, but not very useful in the > wide-scale DVM application range due to low input and reference voltages. > Within a year I'm trying to develop a design of the selfcal 7.5-digits DMM > with ADS1282 ADC. Reference (+/- 10V) is a aged 1N829A with 0.03ppm noise and > 2nd order TC correction, downscaled to +/-2.5 V with zero TC divider. > > Mickle T. > > > 29.01.2013, 11:38, "Poul-Henning Kamp" <[email protected]>: >> Content-Type: text/plain; charset=ISO-8859-1 >> -------- >> In message <AA473A4936944A1199FC6F4C9C5D9A1A@laptop>, "Andreas Jahn" writes: >> >> Amazing! >> >> Recently I came across a very interesting ADC from TI, designed for >> use with geophones: ADS1282 >> >> It might be interesting for volt-nuttery: It samples 2 bits at >> 4MHz, which are then downsampled to 31 bits at 4kHz or less. For >> this reason it is incredibly linear and has very good S/N. >> >> -- >> Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 >> [email protected] | TCP/IP since RFC 956 >> FreeBSD committer | BSD since 4.3-tahoe >> Never attribute to malice what can adequately be explained by incompetence. >> _______________________________________________ >> volt-nuts mailing list -- [email protected] >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts >> and follow the instructions there. > _______________________________________________ > volt-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there. _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
