| 摘要 |
A current driver circuit includes: a current conversion unit including an input side transistor, in which a reference current is input, and multiple output side transistors, which output an output current corresponding to the reference current, and having an digital-analog conversion function for converting a digital control signal to an analog signal and a current amplifying function for amplifying the reference current according to an amplification ratio corresponding to the digital control signal; and an adjustment unit adjusting the digital control signal to be input into the output side transistors. When the adjustment unit adjusts the digital control signal, the current conversion unit changes the amplification ratio to gradually increase or decrease the output current, and controls a slew rate of the output current within a predetermined range. |
| 主权项 |
1. A current driver circuit comprising:
a current conversion unit including an input side transistor, in which a predetermined reference current is input, and a plurality of output side transistors, which output an output current corresponding to the predetermined reference current flowing through the input side transistor, and having an digital-analog conversion function for converting a digital control signal, which is input into the current conversion unit, to an analog signal and a current amplifying function for amplifying the reference current according to an amplification ratio corresponding to the digital control signal, the digital-analog conversion function and the current amplifying function being integrated into the current conversion unit; and an adjustment unit adjusting the digital control signal to be input into the plurality of output side transistors, wherein: when the adjustment unit adjusts the digital control signal, the current conversion unit changes the amplification ratio to gradually increase or decrease the output current from the plurality of output side transistors, and controls a slew rate of the output current to be within a predetermined range. |
