Micropower CMOS lock-in amplifier for portable applications
Micropower CMOS lock-in amplifier for portable applications
复制标题
适用于便携式应用的微功耗 CMOS 锁定放大器
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
B. Calvo
中科院分区：
文献类型：
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作者：
P. M. Hernandez;M. T. S. Pascual;B. Calvo
提出了一种新型的全集成微功耗CMOS模拟锁定放大器（LIA）。为了实现能够在低电压下以低功耗工作的紧凑架构，它基于电流模式放大器，并在整流级内嵌入整流。0.18 µm CMOS实现的布局后结果显示，动态储备为51.2 dB，功耗为482 µW，集成面积为0.03 mm2。工作频率范围为450 Hz至1.1 MHz，增益可在39 dB至59 dB范围内编程，使LIA具有灵活性，可匹配各种应用。
A new fully integrated micropower CMOS analogue lock-in amplifier (LIA) is presented. To achieve a compact architecture able to operate under low voltage with low-power consumption, it is based on a current-mode amplifier with embedded rectification within the transconductance stage. Post-layout results for a 0.18 µm CMOS implementation show a dynamic reserve of 51.2 dB, a power consumption of 482 µW and an integration area of 0.03 mm2. The frequency operation ranges from 450 Hz to 1.1 MHz, whereas the gain is programmable from 39 to 59 dB, providing the LIA with flexibility to match a wide range of applications.