带温度补偿的低功耗CMOS环形压控振荡器设计

摘要

A low-power consumption CMOS voltage controlled oscillator (VCO) with temperature compensation was de-signed based on UMC 65 nm CMOS technical,which is applied to phase-locked loop frequency synthesizer and consists of three-stage cross coupling delay units. The simulation results verify that the output frequency range of VCO is 735~845 MHz,the drift-ing center frequency of VCO output is 790 MHz+10 MHz under temperature compensation when the temperature changes from 60 to 100 ℃, the phase noise is -99 dBc/Hz at the place where 1 MHz deviation from the center frequency when the oscillating frequency is 790 MHz,and the power consumption of VCO is 0.96 mW under the condition of 1.2 V power supply. The chip area is approximate to 0.005 mm2.%基于UMC 65 nm CMOS 工艺,设计了一款应用于锁相环频率综合器中的带温度补偿的低功耗CMOS环形压控振荡器.环形压控振荡器采用3级交叉耦合延时单元构成.仿真结果表明,压控振荡器输出频率范围为735~845 MHz;在温度补偿下,温度变化从-60~100 oC时,振荡器输出频率漂移中心频率790 MHz±10 MHz;当振荡频率为790 MHz时,在偏离其中心频率1 MHz处,压控振荡器的相位噪声为-99 dBc/Hz;1.2 V电源供电情况下,压控振荡器的功耗为0.96 mW;版图面积约为0.005 mm2.