| 摘要 |
A ring oscillator according to the present invention comprises: a ring oscillation unit, including a current starved inverter CSI having a current control P channel transistor P2, a signal transmission P channel transistor P3, a signal transmission N channel transistor N3 and a current control N channel transistor N2, and an in-phase signal transmitter receiving a signal from the current starved inverter, and outputting an in-phase signal to the current starved inverter; and a current control unit, including a basic current source having P channel transistor P10 and an N channel transistor N10 which is operated in a weak inversion state and flows a subthreshold current, and a current mirror circuit having a P channel transistor P12 current-mirror connected to the P channel transistors P10 and P2, and an N channel transistor N12 current-mirror connected to the N channel transistor N2.
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