Patent ID: 8395446

Claim:
A method for amplification, comprising: providing a dual mode isolation amplifier having a first mode of operation and a second mode of operation; in the first mode of operation, operating with a resistor-loaded differential transconductance with additional gain by: deasserting a first high-pass control signal and asserting a second high-pass control signal; placing a first switch circuit in a substantially nonconductive state for electrically decoupling from a first current source node and a second current source node; placing a second switch circuit in a substantially conductive state for electrically coupling a capacitor thereof to the first current source node and the second current source node; and at high frequencies, substantially reducing a first resistance associated with the capacitor coupled in parallel with a resistive load, the resistive load coupled between the first current source node and the second current source node; wherein the first resistance is reduced by approximating a short circuit by the capacitor during high-frequency operation.