No prolem John, 1. This would be in terms of the full scale range being used. As you stated, if you take it in terms of the reference and then multiply it by the factor for the full range, and you still end up at the same result as if you would have used the full scale range initially. For example, if the offset drift is 3ppm/C, and the full scale range is +/-10.24V, then, Off_td * FSC = 3*10^-6*(2*10.24) = 61.44uV/C. If you use the reference instead and gain it up based on the range desired then the equation would be: Off_td *(4.096*2.5)*2=61.44uV/C 2. This figure shows typical performance. It would be best to use the specs in the electrical characteristics to compensate for the drift based on the measured temperature. Regards Cynthia
↧
