A folded-cascode OP Amp with a dynamic switching bias circuit

A Switched-Capacitor Low-Pass Filter with Dynamic Switching Bias OP Amplifiers

“…The SC LPF configuration was designed referencing a SC biquad circuit with integrators in the A configuration of the DSBFC OP Amp enabling low power consumption, which is different from conventional ordinary OP Amps [10], is shown in Figure 3. With respect to the DSBFC OP Amps, the same CMOS channel width / length as that in the DSBFC OP Amp shown in the reference [10] was employed. The sampling switch was designed to a channel width / channel length W/L=35/2.5 (μm/μm) for each of p-MOSFET and n-MOSFET.…”