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首页> 外文期刊>Biomedical Circuits and Systems, IEEE Transactions on >A Low-Voltage Chopper-Stabilized Amplifier for Fetal ECG Monitoring With a 1.41 Power Efficiency Factor
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A Low-Voltage Chopper-Stabilized Amplifier for Fetal ECG Monitoring With a 1.41 Power Efficiency Factor

机译：一种低压斩波稳定放大器，用于胎儿心电图监测，功率因数为1.41

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摘要

This paper presents a low-voltage current-reuse chopper-stabilized frontend amplifier for fetal ECG monitoring. The proposed amplifier allows for individual tuning of the noise in each measurement channel, minimizing the total power consumption while satisfying all application requirements. The low-voltage current reuse topology exploits power optimization in both the current and the voltage domain, exploiting multiple supply voltages (0.3, 0.6 and 1.2 V). The power management circuitry providing the different supplies is optimized for high efficiency (peak charge-pump efficiency ).The low-voltage amplifier together with its power management circuitry is implemented in a standard CMOS process and characterized experimentally. The amplifier core achieves both good noise efficiency factor and power efficiency factor . Experiments show that the amplifier core can provide a noise level of in a 0.7 to 182 Hz band, consuming power. The amplifier together with its power management circuitry consumes , achieving a PEF of 1.41. The amplifier is also validated with adult ECG and pre-recorded fetal ECG measurements.
机译：本文提出了一种用于胎儿心电监护的低压电流复用斩波稳定前端放大器。建议的放大器允许对每个测量通道中的噪声进行单独调整，从而在满足所有应用要求的同时，将总功耗降至最低。低压电流复用拓扑利用电流和电压域中的功率优化，利用多个电源电压（0.3、0.6和1.2 V）。提供不同电源的电源管理电路针对高效率（峰值电荷泵效率）进行了优化。低压放大器及其电源管理电路以标准CMOS工艺实现，并通过实验进行了表征。放大器内核同时具有良好的噪声效率因子和功率效率因子。实验表明，放大器内核可以提供0.7至182 Hz频带的噪声电平，从而消耗功率。该放大器及其电源管理电路消耗的功率达到了1.41的PEF。该放大器还通过成人心电图和预先记录的胎儿心电图测量结果进行了验证。

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