A 65 nm 75 MHz–260 MHz sixth-order Active-RC bandpass filter

Abstract

-A sixth-order Chebyshev-I active-RC bandpass filter was fabricated in a 65 nm CMOS process. An operational amplifier (OPA) with an improved feedforward compensation structure is achieved, which significantly increases bandwidth and gain while reducing power consumption. The tuning module enables the filter to measure a center frequency of 75 MHz–260 MHz, and the bandwidth, Q-factor and gain can be configured according to different application requirements. The effective area of the filter chip is 0.64 mm2, and it can operate at a voltage of 2.5 V with a current dissipation of 34.3 mA.