A 0.5-V 0.42.24-GHz Inductorless Phase-Locked Loop in a System-on-Chip

作者：Cheng, Kuo-Hsing^*; Tsai, Yu-Chang; Lo, Yu-Lung; Huang, Jing-Shiuan

来源：IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, 2011, 58(5): 849-859.

DOI：10.1109/TCSI.2010.2089559

• Charge pump (CP)
• low-voltage segmented current mirror (LV-SCM)
• multi-phase VCO
• phase-locked loop (PLL)
• system-on-chips (SoCs)

A phase-locked loop (PLL) is proposed for low-voltage applications. A new charge pump (CP) circuit, using gate switches affords low leakage current and high speed operation. A low-voltage voltage-controlled oscillator (LV-VCO) composed of 4-stage delay cells and a low-voltage segmented current mirror (LV-SCM) achieves low voltage-controlled oscillator gain (K-VCO), a wide tuning range, and good linearity. A LV-SCM generates more current with small area by switching the body rather than the gate. The PLL is implemented in standard 90-nm CMOS with regular V-T (RVT) devices. Its output jitter is 2.22 ps (rms), which is less than 0.5% of the output period. The phase noise is -87 dBc/Hz at 1-MHz offset from a 2.24-GHz center frequency. Total power dissipation at 2.24-GHz output frequency, and with 0.5-V power supply is 2.08 mW(excluding the buffers). The core area is 0.074 mm(2).

• 出版日期2011-5
• 单位中央民族大学