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首页> 外文期刊>IEICE Electronics Express >A low reference spur phase-locked loop realized with dynamic current injection charge pump
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A low reference spur phase-locked loop realized with dynamic current injection charge pump

机译:用动态电流喷射电荷泵实现的低参考旋锁环

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A dynamic current injection charge pump (DCI-CP) is proposed to obtain perfect dynamic current match in this paper. In the proposed DCI-CP, dynamic injection current which includes positive injection current and negative injection current is generated to compensate the dynamic current mismatch. To verify the proposed DCI-CP, a CPPLL is fabricated in SMIC 0.18-μm CMOS process. Measurement results show that it synthesizes frequency from 0.6 to 1.3 GHz with a supply voltage of 1.8 V, consuming 4.7 mW. Simulation results show the dynamic current mismatching of proposed DCI-CP is as low as 4 nA even in the worst case. The measurement reference spur achieves ?74 dBc at 1.1 GHz oscillation frequency, of which the maximum and minimum reduction are 9 dB and 3 dB, respectively. The phase noise achieves ?98.5 dBc/Hz @1 MHz offset. The core occupies a die area of 0.154 mm2 totally.
机译:提出了一种动态电流注入电荷泵(DCI-CP),以获得本文的完美动态匹配。在所提出的DCI-CP中,产生包括正喷射电流和负喷射电流的动态喷射电流以补偿动态电流不匹配。为了验证所提出的DCI-CP,CPPLL在SMIC 0.18-μmCMOS过程中制造。测量结果表明,它合成0.6至1.3 GHz的频率,电源电压为1.8 V,消耗4.7兆瓦。仿真结果表明,即使在最坏的情况下,所提出的DCI-CP的动态电流不匹配也低至4 NA。测量参考施用在1.1 GHz振荡频率下实现74dBc,其中最大和最小缩减为9 dB和3 dB。相位噪声达到?98.5 dbc / hz @ 1 MHz偏移量。核心完全占据0.154mm2的模具面积。

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