Linear MOSFET-C integrators using a single triode region MOS resistance

The design of MOSFET-C continuous time integrators is presented. Each integrator comprise one triode region MOSFET, one active element (either an opamp or current follower), and one capacitor. Linearity is achieved by maintaining a small DC value for V/sub ds/, and applying the large signal input to the gate. Analytical expressions are developed, and simulation results are provided to illustrate the theory. Experimental results from an opamp and current follower based biquadratic filters are included to support theoretical claims.