An improved inductive sensor measurement circuit of AD698 is proposed

which reduce work power of the chip of AD698

avoiding the situation that the chip would be overheated because of long-time operation

which will cause the temperature drift of measurement circuit.The principle of work of the inductance sensing circuit based on AD698

and the design of improved circuit are introduced.Measurement experiment of the circuit before and after improvemed is carried out.The results show that improved inductive sensor circuit of AD698 almost has no temperature drift during long-time operation.