We plan to use the AD8302 to measure the phase (few degrees, <5) of signals with different amplitudes in the 250kHz-25MHz range. We need phase measurements with considerable precision; ~0.1 deg. Can we restrict the phase range of the AD8302 to be narrow (say 5-10 deg), but with high precision? The default slope is 10mV/deg; a 100-fold increase would be most desirable in order to discriminate the phase differences.
We are currently using a TSSOP-DIP adapter and a breadboard, in conjunction with a ucontroller, to verify if the AD8302 will meet our requirements. Any suggestions as to how to implement an optimal arrangement will be appreciated.