| 摘要 |
A current bias circuit and a current bias start-up circuit thereof are disclosed. The bias start-up circuit supplies a compensation current to the bias circuit to compensate the leakage current of the current bias circuit during activation and turns off the compensation current after start-up. Accordingly, the bias start-up circuit could compensate the leakage current of the current bias circuit and the bias start-up circuit could reduce the power consumption.
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