| 摘要 |
PROBLEM TO BE SOLVED: To provide a slave for communication capable of smoothing variations that occur in a bus due to a current consumed by the slave itself.SOLUTION: A smoothing current output circuit 9 which generates a current with phase opposite to that of a dynamic consumption current detected by a current monitoring unit 8 is provided between a sense resistor 7 and the current monitoring unit 8, and a transmission circuit 5, which transmits a signal to a master 2 by driving a bus 3 with current. The smoothing current output circuit 9 is capable of smoothing variations that occur in the bus 3 due to a current consumed by the master 1 itself, so that the master 2 can receive a signal transmitted by a slave 1 without being affected by such variations.SELECTED DRAWING: Figure 1 |
