Title :
A new compensated integrator structure with differential difference amplifier and its application to high frequency MOSFET-C filter design
Author_Institution :
Tech. Univ., Gdansk, Poland
Abstract :
An investigation has been made into the possibility of using differential difference amplifiers (DDA) for high frequency MOSFET-C filter design. A new concept of DDA finite gain-bandwidth product compensation with respect to integrator and lossy integrator realizations is proposed. In this approach, when a one-pole approximation model of DDA is valid, the transfer function of the MOSFET-C filter is shown to be close to the ideal one. As an example, SPICE computer simulation results of the fifth order elliptic and seventh order Chebyshev low pass MOSFET-C filters are presented which confirm the theory
Keywords :
active filters; compensation; differential amplifiers; field effect transistor circuits; integrating circuits; network synthesis; operational amplifiers; transfer functions; Chebyshev low pass filter; MOSFET-C filter design; SPICE computer simulation; active filters; compensated integrator structure; differential difference amplifier; fifth order elliptic filter; finite gain-bandwidth product compensation; high frequency; lossy integrator realizations; one-pole approximation model; seventh order type; transfer function;
Conference_Titel :
Circuit Theory and Design, 1989., European Conference on
Conference_Location :
Brighton
