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Abstract
The paper is presented the design of high-frequency OTA-C band-pass filter with on-chip automatic tuning. In this design, the linear operational transconductance amplifier (OTA) is proposed based on fully complementary differential pairs with source degneration, and achieves both low-distortion figures and high-frequency operation. The matching design between the master filter and the slave filter is also given, and the non-ideality effect of the OTA-C filters with on-chip automatic tuning is discussed. The whole circuit is designed using TSMC 0.18μm 1.8V CMOS process and post-simulation results show the center frequency of filter is 105MHz with relative error of 0.4%, when the process corner varies between SS, TT, FF, and the temperature from-20 to 120°C.
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