If you want better than 16-bits and 1KHz then you also are going to need a very good quality analog signal conditioning and instrumentation amplifier. The analog circuit between the A/D converts and the load cell really does matter. You have to reject common-mode or the low bits will just be filled with 60Hz noise. And you can not simply use a "brick wall" filter or you will not get the desired bandwidth through. (If you are needing to sample at 1K then you must care about 500Hz bandwidth.
This matters a LOT more than which A/D chip you use. 22 bits is better than one part per million. Do you really need that? It will be hard to isolate all of the electrical and mechanical noise especially On Tue, Sep 17, 2019 at 2:26 PM Curtis Dutton <[email protected]> wrote: > I have a pet project I'm starting that will involve reading a load cell in > as near as real time as possible and using that input for servo control. > > I plan on using mesa hardware to interface to the equipment. Does anyone > know of a nice way to interface hotsmot2 to a load cell? > > I would like a fairly high resolution. 16 bit minimum, the higher the > better up to 22 bit I suppose. As well as the ability to sample at the > servo thread rate of 1 Khz. > > > Thanks, > Curtis > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Chris Albertson Redondo Beach, California _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
