High Quality Factor Two Notch Low Noise Darlington Amplifier for Low Frequency application

High Quality Factor Two Notch Low Noise Darlington Amplifier for Low Frequency application is presented. Based on the consecutive two resonator with inductive feedback techniques, this technique exits two resonator with high quality factor at two resonance frequency, Voltage series feedback consist using feedback element inductor, this feedback compensation technique used to sustain stability with respect to larger variation in environments´ parameters, applied supply and contains of noise, two resonant scheme is analyzed and consists high quality factor, high selective in Low Noise Darlington Amplifier, exhibit input matching, low noise and high gain at two frequencies band with relatively low power consumption 89.11 nWatt. achieves a 10dB, 4dB gain at 90 kHz and 450 kHz respectively, -10dB S11 within 100Hz to 3KHz, -76dB, S21, -54dB, -68dB. S12 at 90 KHz and 450 KHz respectively, Minimum noise contain of proposed design is 1.19nV. This dual notch proposed amplifier used for low frequency application.