The Design and Realization of a Resonator Based on LTC1562

For meeting the need of resonator in communication and signal-processing experiments during the past decades,the working principle of LTC1562 is analyzed,which is a continuous-time,active RC filter,and the computing formula of the center frequency is deduced,then by use of LTC1562 and filter design software Filter CAD,a 12th order Bessel active band-pass filter with its center frequency at 120kHz is designed and realized as resonator,the experiment results show that the design of resonator has a high precision and strong practicality,and is suitable for use in related systems.