Patent ID: 6307430
Filing Date: 2001-10-23
Classification: H03F

Abstract:
An amplifier circuit comprising:a) a first amplifier sub-circuit having a signal input and a clock input, said signal input operable to receive an input signal, and said clock input operable to receive a clock signal, said first amplifier sub-circuit operable to generate first and second output signals, each output signal including a clock component based on said clock signal input;b) a second amplifier sub-circuit having an input connected to said first output signal, a feedback path connected to said input signal, and an output, said second amplifier sub-circuit operable to be turned off when said clock component is in a first condition and to collectively form a gain-boosted cascode amplifier with said first sub-circuit to provide an amplified signal at its output when said clock component is in a second condition; andc) a third amplifier sub-circuit having an input connected to said second output signal, a feedback path connected to said input signal, and an output, said third amplifier sub-circuit operable to be turned off when said clock component is in said second condition and to collectively form a gain-boosted cascode amplifier with said first sub-circuit to provide an amplified signal at its output when said clock component is in said first condition.