A Dividerless PLL With Low Power and Low Reference Spur by Aperture-Phase Detector and Phase-to-Analog Converter

A Dividerless PLL With Low Power and Low Reference Spur by Aperture-Phase Detector and Phase-to-Analog Converter
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采用孔径相位检测器和相模转换器的低功耗和低参考杂散无分频器 PLL

DOI:
10.1109/tcsi.2012.2215751
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发表时间:
2013
影响因子:
5.1
通讯作者:
Kiat Yeo
Kiat Yeo
中科院分区:
工程技术2区
文献类型:
--
作者:
Wei Li;Ning Li;Hao Yu;Kiat Yeo

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本文介绍了一种具有低功耗、低参考杂散和低带内相位噪声的 2.1 GHz 无分频器 PLL。采用孔径相位检测器 (APD) 和相位模拟转换器 (PAC) 的新型相位检测机制可生成与参考电压和 VCO 之间的相位误差成比例的模拟电压,然后控制后续电荷泵 (CP) 的电流幅度。所提出的CP中的充电和放电电流在锁定状态下具有相等的脉冲宽度和相等的小幅度,这有效地降低了CP的参考杂散和功耗。此外,与锁定状态下具有相同偏置电流的传统 CP 相比,所提出的 CP 可以为 PLL 输出提供低得多的噪声。此外,还提出了一种通过理论分析实现环路增益可调的方法,以减少PLL输出抖动。所提出的 PLL 采用标准 0.13μm CMOS 工艺制造。它在 1.2V 电源电压下消耗 2.5mA 电流,占据 0.48mm × 0.86mm 的核心面积。所提出的 PLL 的参考杂散经测量为 -80 dBc/-74 dBc,并且在 100 kHz 偏移时实现了 -103 dBc/Hz 的带内相位噪声。
A 2.1-GHz dividerless PLL with low power, low reference spur and low in-band phase noise is introduced in this paper. A new phase detection mechanism using aperture-phase detector (APD) and phase-to-analog converter (PAC) generates an analog voltage in proportion to the phase error between reference and VCO, and then controls the current amplitude of the following charge pump (CP). The charging and discharging currents in the proposed CP have equal pulse width and equal small amplitude in locked state, which reduces the reference spur and power consumption of the CP effectively. Moreover, compared to the conventional CP with the same bias current in locked state, the proposed CP can contribute a much lower noise to the PLL output. In addition, a method of tunable loop gain with theoretical analysis is introduced to reduce the PLL output jitter. The proposed PLL is fabricated in a standard 0.13-μm CMOS process. It consumes 2.5 mA from a 1.2-V supply voltage and occupies a core area of 0.48 mm × 0.86 mm. The reference spur of the proposed PLL is measured to be -80 dBc/-74 dBc and an in-band phase noise of -103 dBc/Hz at 100 kHz offset is achieved.
DOI: --
发表时间: 2002-06
期刊: --
影响因子: --
作者:
C. Vaucher;Bram Nauta
通讯作者: C. Vaucher;Bram Nauta
DOI: 10.1109/asscc.2011.6123622
发表时间: 2011-11
期刊: IEEE Asian Solid-State Circuits Conference 2011
影响因子: --
作者:
Deyun Cai;Haipeng Fu;Junyan Ren;Wei Li;Ning Li;Hao Yu;K. Yeo
通讯作者: Deyun Cai;Haipeng Fu;Junyan Ren;Wei Li;Ning Li;Hao Yu;K. Yeo
DOI: 10.1109/jssc.2011.2143950
发表时间: 2011-07-01
影响因子: 5.4
作者:
Murphy, David;Gu, Qun Jane;Chang, Mau-Chung Frank
通讯作者: Chang, Mau-Chung Frank
DOI: 10.1109/jssc.2009.2032723
发表时间: 2009-12-01
影响因子: 5.4
作者:
Gao, Xiang;Klumperink, Eric A. M.;Nauta, Bram
通讯作者: Nauta, Bram