公开(公告)号：US5581584A

公开(公告)日：1996-12-03

申请号：US277951

申请日：1994-07-20

申请人： Atsushi Inoue ,  Toshio Hata ,  Osamu Tamakoshi ,  Takayasu Komaki

发明人： Atsushi Inoue ,  Toshio Hata ,  Osamu Tamakoshi ,  Takayasu Komaki

IPC分类号： H03L7/06 ,  H03B1/00 ,  H03B7/02 ,  H03B7/06 ,  H03L7/099 ,  H03D3/24

CPC分类号： H03B7/02 ,  H03L7/099 ,  H03B2201/02 ,  H03B7/06

摘要： A PLL circuit includes a PLLic formed into an integrated circuit; a loop filter for receiving an output signal from the PLLic; a voltage-controlled oscillator having an oscillation frequency which is controlled according to an output signal of the loop filter for applying a controlled oscillation output signal to the PLLic, the voltage-controlled oscillator including a resonator and a negative resistor circuit; wherein a buffer amplifier functioning as a part of the voltage-controlled oscillator is incorporated into the PLLic, and the resonator and the negative resistor circuit of the voltage-controlled oscillator are disposed outside of the PLLic.

摘要翻译： PLL电路包括形成为集成电路的PLL; 用于接收来自PLL的输出信号的环路滤波器; 压控振荡器，其具有根据所述环路滤波器的输出信号控制的振荡频率，用于向所述PLL提供受控振荡输出信号，所述压控振荡器包括谐振器和负电阻电路; 其中用作压控振荡器的一部分的缓冲放大器被并入到PLL中，并且压控振荡器的谐振器和负电阻电路设置在PLL的外部。