Abstract: An amplifier receives and amplifies a received signal having a power range that is greater than the amplifier's linear operating region. The amplifier has a sensing circuit that senses the power of the received signal and, responsive to the input signal power level, generates an impedance control value proportional to the input signal power level. A main signal path amplifies a main path signal portion to generate an amplified signal. An attenuation signal path has a variable impedance controlled by the impedance control value. As the received signal power level increases, the impedance control value reduces the variable impedance, thereby diverting a portion of the received signal away from the main signal path and into the attenuation signal path, and when the received signal power level decreases, a smaller portion of the received signal flows through the attenuation signal path. The variable impedance may have an attenuation signal path transistor.

Abstract: Offset calibration for signal rms measurement is provided. A method includes determining a first offset calibration of a first differential pair of a circuit. The first differential pair comprises a first transistor and a second transistor. The method also includes determining a second offset calibration of a second differential pair of the circuit. The second differential pair comprises a third transistor and a fourth transistor. Further, the method includes, based on the first offset calibration and the second offset calibration, determining a third offset calibration of a common mode.

Abstract: A system and method for testing the bandwidth of an amplifier by forcing the amplifier into an oscillation with a feedback signal. The oscillation frequency reveals the amplifier bandwidth. The system comprises an amplifier an input and an output, the amplifier output providing an amplifier output signal. A feedback system is configured to receive the amplifier output signal, process an amplifier output signal to create a feedback signal, provide the feedback signal to the amplifier input. Also part of this system is a frequency divider having an input connected to the amplifier output. The frequency divider is configured to reduce the frequency of the amplifier output signal to create a reduced frequency signal and provide the reduced frequency signal to test equipment which is configured to measure the frequency of the reduced frequency signal.

Abstract: A single servo control loop for amplifier gain control based on signal power change over time or system to system, having an amplifier configured to receive an input signal on an amplifier input and generate an amplified signal on an amplifier output. The differential signal generator processes the amplified signal to generate differential output signals. The single servo control loop processes the differential output signal to generates one or more gain control signals and one or more current sink control signals. A gain control system receives a gain control signal and, responsive thereto, controls a gain of one or more amplifiers. A current sink receives a current sink control signal and, responsive thereto, draws current away from the amplifier input. Changes in input power ranges generate changes in the integration level of the differential signal outputs which are detected by the control loop, and responsive thereto, the control loop dynamically adjusts the control signals.

Abstract: A single servo control loop for amplifier gain control based on signal power change over time or system to system, having an amplifier configured to receive an input signal on an amplifier input and generate an amplified signal on an amplifier output. The differential signal generator processes the amplified signal to generate differential output signals. The single servo control loop processes the differential output signal to generates one or more gain control signals and one or more current sink control signals. A gain control system receives a gain control signal and, responsive thereto, controls a gain of one or more amplifiers. A current sink receives a current sink control signal and, responsive thereto, draws current away from the amplifier input. Changes in input power ranges generate changes in the integration level of the differential signal outputs which are detected by the control loop, and responsive thereto, the control loop dynamically adjusts the control signals.

Abstract: A system and method for testing the bandwidth of an amplifier by forcing the amplifier into an oscillation with a feedback signal. The oscillation frequency reveals the amplifier bandwidth. The system comprises an amplifier an input and an output, the amplifier output providing an amplifier output signal. A feedback system is configured to receive the amplifier output signal, process an amplifier output signal to create a feedback signal, provide the feedback signal to the amplifier input. Also part of this system is a frequency divider having an input connected to the amplifier output. The frequency divider is configured to reduce the frequency of the amplifier output signal to create a reduced frequency signal and provide the reduced frequency signal to test equipment which is configured to measure the frequency of the reduced frequency signal.