Patent ID: 6965270

Claim:
An amplifier connected between first and second power supply terminals, the amplifier comprising: a. an amplifier input terminal; b. an amplifier output terminal; c. a feedback amplifier having i. a bias terminal receiving a first bias voltage; ii. first and second feedback terminals; and iii. a feedback-amplifier terminal; d. a cascode circuit including: i. an input transistor having a first current-carrying terminal connected to the first feedback terminal, a second current-carrying terminal connected to the second supply terminal, and a control terminal connected to the amplifier input terminal; and ii. a output transistor having a first current-carrying terminal connected to the amplifier output terminal, a second current-carrying terminal connected to the first feedback terminal, and a control terminal connected to the second feedback terminal; and e. a booster circuit connected between the feedback-amplifier terminal and the second power supply terminal, the booster circuit configured to generate a booster voltage on the feedback-amplifier terminal sufficient to bias the input transistor in a saturation mode.