DIFFERENTIAL TRANSMISSION CIRCUIT AND PRINTED CIRCUIT BOARD

PROBLEM TO BE SOLVED: To suppress a common mode component generated by variation in the values of the capacitance of second and third capacitors electrically connected to the ground, and to reduce a common mode component caused by the differential signal transmission unit.SOLUTION: A differential transmission circuit 100 comprises: an inductor unit 8 comprising first and second inductors 11 and 12; an input side capacitor unit 7 provided on a signal input side of the inductor unit 8; and an output side capacitor unit 9 provided on a signal output side of the inductor unit 8. The input side capacitor unit 7 comprises: a first capacitor 21 provided between first and second signal lines 3 and 4; a second capacitor 22 provided between the first signal line 3 and the ground; and a third capacitor 23 provided between the second signal line 4 and the ground.