| 摘要 |
A semiconductor circuit capable of reducing flicker noise is provided to reduce phase noise of a VCO(Voltage Controlled Oscillator) and a PLL(Phase Locked Loop) by reducing flicker noise of the VCO and the PLL. In a semiconductor circuit, a pair of cross-coupled field effect transistors comprises bodies and is cross-connected to generate negative-conductance. A body bias voltage supply circuit(130) supplies a body bias voltage to each body of the cross-coupled transistor pair, so that a forward bias voltage is supplied to each body and source of the cross-coupled transistor pair. In the body bias voltage supply circuit, a current generation circuit(131) supplies a current to each body of the cross-coupled field effect transistor pair in response to an enable signal, and a voltage generation circuit(137) generates the body bias voltage on the basis of the current. |
