Amplifier arrangement with multipath miller zero cancellation

摘要

An amplifier arrangement comprises an inverting transconductance stage having an input and an output; a capacitor coupled between the input and the output of the inverting transconductance stage; and signal current means having a first output coupled to the input of the inverting transconductance stage to provide a first signal current to the input of the inverting transconductance stage. The signal current means further comprises a second output coupled to the output of the inverting transconductance stage to provide a second signal current to the output of the inverting transconductance stage, which second signal current is substantially equal and in phase opposition to the first signal current. A second parallel path bypasses the Miller-compensated transconductance stage to eliminate the right half-plane zero of the Miller compensation.