DEVICES WITH SIGNAL CHARACTERISTIC DEPENDENT CONTROL CIRCUITRY AND METHODS OF OPERATION THEREFOR

摘要

An embodiment of a device includes a terminal, an active transistor die electrically coupled to the terminal, a detector configured to sense a signal characteristic on the terminal, and control circuitry electrically coupled to the active transistor die and to the detector, wherein the active transistor die, detector, and control circuitry are coupled to a package. The control circuitry may include a control element and a control device. Based on the signal characteristic, the control circuitry controls which of multiple operating states the device operates. A method for controlling the operating state of the device includes sensing, using the detector, a signal characteristic at the terminal, and determining, using the control device, whether the signal characteristic conforms to a pre-set criteria, and when the signal characteristic does not conform to the pre-set criteria, modifying the state of the control element to alter the operating state of the device.

主权项

1. A device comprising:
a package that includes an input terminal for receiving a first input signal, and an output terminal; an active transistor die coupled to the package and electrically coupled to the input terminal and to the output terminal, wherein the active transistor die is configured to receive a second input signal corresponding to the first input signal, and to amplify the second input signal to produce an output signal; a detector, coupled to the package and electrically coupled to the active transistor die, and configured to sense a signal characteristic of the output signal, and to produce one or more detector signals indicating the signal characteristic; and control circuitry, coupled to the package and electrically coupled to the active transistor die and to the detector, wherein the control circuitry is configured to acquire the one or more detector signals indicating the signal characteristic from the detector, to estimate, based on the one or more detector signals, an out-of-band power level in one or more out-of-band frequency ranges, and when the out-of-band power level is estimated to exceed a pre-determined level, to reduce a power level of the first input signal to produce the second input signal.