The data sheets for the LTC2400 and LTC2440 are very specific that offset and full-scale calibrations are performed on every conversion cycle.
On Sat, 2 Feb 2013 14:58:19 +0100, "Andreas Jahn" <[email protected]> wrote: >. . . > >To the 50 or 60 Hz output rate: >The output rate is not necessarily equal to integration time. >When I measure the input of a LT2400 with a oscilloscope, >I see the swiching noise from sigma delta converter >only the 2nd half 80 ms out of 160 ms output rate (configured for 50 Hz). >The first half of the measurement time the input is passive. > >I guess that the LTC2400 does a kind of self-calibration every measurement >cycle. >Otherwise he would not have the offset and gain drift specs. > >. . . _______________________________________________ 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.
