Abstract: An IC package includes a magnetic detection element, multiple lead lines electrically connected to the magnetic detection element, and multiple terminal lines weldable to the lead lines respectively. A first welding portion, in which a first lead line of the multiple lead lines is welded to a first terminal line of the multiple terminal lines, is not on vertical lines that pass through second welding portions in which the second lead lines of the multiple lead lines are welded to the second terminal lines of the multiple terminal lines respectively. The second lead lines are adjacent to the first lead line. The vertical lines are orthogonal to center axes of the second lead lines.

Abstract: A signal output device is provided in a communication apparatus. The communication apparatus communicates with a different one of the communication apparatus using a single line. The signal output device includes a signal output unit. The signal output unit includes a first filter and a second filter. The first filter is provided by a Bessel filter. The second filter is provided by a Chebyshev filter or a Butterworth filter. The signal output unit outputs a signal which is obtained by passing a predetermined signal through the first filter and the second filter. The signal output from the signal output unit has a pass characteristic of the first filter and a pass characteristic of the second filter. A cutoff frequency of the first filter is set to be lower than a cutoff frequency of the second filter.

Abstract: A signal output device is provided in a communication apparatus. The communication apparatus communicates with a different one of the communication apparatus using a single line. The signal output device includes a signal output unit. The signal output unit includes a first filter and a second filter. The first filter is provided by a Bessel filter. The second filter is provided by a Chebyshev filter or a Butterworth filter. The signal output unit outputs a signal which is obtained by passing a predetermined signal through the first filter and the second filter. The signal output from the signal output unit has a pass characteristic of the first filter and a pass characteristic of the second filter. A cutoff frequency of the first filter is set to be lower than a cutoff frequency of the second filter.