Design of Telescopic OTA based 6th order Butter-worth Low Pass Filter using 0.18μm CMOS Technology

This paper introduces the idea of the OTA(Operational Trans-conductance Amplifier) based 6th order Butter-worth low-pass filter(BLPF). Using the Cadence Spectre tool with 0.18 μm technology, the design and simulation of this OTA based 6th order BLPF are completed. The simulated results of OTA show the gain of around 81.70 dB and UGB of 27.107 MHz. The simulation of the proposed filter represent the magnitude of the frequency response of -148.6 mdB, 8.95MHz pass-band frequency, 69.97 dB PSRR, 135.98 dB NF, 203μW average power dissipation, and 2.2 GHz bandwidth.