MAGNETIC SENSOR CIRCUIT AND ELECTRONIC APPARATUS USING SAME

摘要

A magnetic sensor circuit of the present invention is comprised of a hall element (10); a changeover switch circuit (20) for changing detection states of the hall element (10) to either a first changeover state or a second changeover state; a comparison unit (60) that carries out comparison processing by using a detected voltage of the hall element (10) and a predetermined standard voltage to generate a compared result signal (COUT); a logic circuit (80) that generates a logical operation signal (LOUT) for maintaining an output signal (OUT) or reversing it in accordance with the output signal (OUT) and the logical operation signal (LOUT); a latch circuit (70) that latches the logical operation signal (LOUT) to output the output signal (OUT); a control circuit (90) that determines a changeover order (the first state ? the second state or the second state ? the first state) of the detection state of the hall element (10).