Current driver circuit
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorYoshihide Komatsu
Life of this patent
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Abstract
A current driver circuit has a current driver and a current compensation circuit. The current driver has a current source transistor connected to a power source potential level, while it is coupled to a pair of transmission lines. The current compensation circuit is coupled to the output side of the current source transistor for the compensation of an output current from the current driver in response to a common mode potential of the pair of transmission lines.
Claims13
A current driver circuit for driving a pair of transmission lines by allowing a current to flow in a terminal resistor connected between the pair of transmission lines, the current driver circuit comprising:
- a current driver having a current source transistor connected to a power source potential level, the current driver being coupled to the pair of transmission lines;
- and
- a current compensation circuit for compensation of an output current from the current driver in response to a common mode potential of the pair of transmission lines, the current compensation circuit being coupled to an output side of the current source transistor.
A current driver circuit for driving a pair of transmission lines by allowing a current to flow in a terminal resistor connected between the pair of transmission lines, the current driver circuit comprising:
- a current driver having a plurality of switch circuits for controlling a current flowing in the pair of transmission lines;
- and
- a current compensation circuit for controlling stepwise respective operations of the plurality of switch circuits in response to a variation in a common mode potential of the pair of transmission lines.
Dependencies are inferred from the claim text.