A Low-power Third-Order Butterworth Filter for NB-IoT Application
ieee international conference on solid state and integrated circuit technology（2018）
摘要
This paper presents a third-order Active-RC filter for NB-IoT applications. The filter achieves relatively low power with power-efficient feedforward-compensated OTA. Digital-controlled resistors and capacitor arrays are flexible for gain and bandwidth tuning. The chip is fabricated in SMIC 55nm CMOS process, occupies an area of 0.19mm 2 . The measurement results indicate that the filter provides 3MHz tuning range and achieves an IIP3 of 28.9dBm with 1.2V power supply and the power consumption is 1.96mW.
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关键词
power consumption,third-order butterworth filter,NB-IoT application,Active-RC filter,digital-controlled resistors,capacitor arrays,bandwidth tuning,power efficiency,feedforward-compensated OTA,low power filter,SMIC CMOS process,size 55.0 nm,frequency 3.0 MHz,voltage 1.2 V,power 1.96 mW,size 0.19 mm
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