Our company intends to produce LVDT sensors。So we buy CN0301 and Measurement Specialties, Inc. E-100 Economy Series LVDT for experiment .
Now I have two questions:
1.The figure8 in AD698 datasheet， AIN of A Channel connect to the secondary output of the LVDT ; Excitation signals connect to phase/Lead circuit and compensates for the −3°of primary to secondary phase shift of the E-100 series LVDT (CN0301) . After that, the signal connect to ACOMP. And AIN signal flip from negative half to positive half with ACOMP,is that right.Why ACOMP do not connect to AIN , is this not going to be more accurate ?
2..About A/B module（duty cycle divider），In this application of figure8 and figure6 in AD698 datasheet，the phase shift of the E-100 series LVDT is −3°, so Phase difference between A channel and B channell is −3°, is that right ? When the signal from A channel and B channel both connet to A/B Block（duty cycle divider）, How did A/B deal with this Phase difference ？
When i use different LVDT,the phase shift is difference , like e100 is −3°, e200 is −5° ,e300 is −8.5° . How did A/B deal with this Phase difference ？