Abstract: Disclosed is an integrated circuit amplifier having a power transistor with a signal/bias input terminal, a first high current terminal, and a second high current terminal, and thermal protection circuitry with a sensor transistor having a sensor control terminal, a sensor output terminal, and a sensor current terminal coupled to a fixed voltage node. Sensor bias circuitry includes a sensor bias terminal coupled to the sensor control terminal, wherein the sensor bias circuitry is configured to generate a temperature set point at which a sensor output voltage at the sensor output terminal drops at least 50% when the temperature of the sensor transistor is above the temperature set point. Shutdown circuitry coupled between the sensor output terminal and the signal/bias input terminal is configured to reduce a bias signal at the signal/bias terminal in response to the at least 50% drop in sensor output voltage.

Abstract: Disclosed is an integrated circuit amplifier having a power transistor with a signal/bias input terminal, a first high current terminal, and a second high current terminal, and thermal protection circuitry with a sensor transistor having a sensor control terminal, a sensor output terminal, and a sensor current terminal coupled to a fixed voltage node. Sensor bias circuitry includes a sensor bias terminal coupled to the sensor control terminal, wherein the sensor bias circuitry is configured to generate a temperature set point at which a sensor output voltage at the sensor output terminal drops at least 50% when the temperature of the sensor transistor is above the temperature set point. Shutdown circuitry coupled between the sensor output terminal and the signal/bias input terminal is configured to reduce a bias signal at the signal/bias terminal in response to the at least 50% drop in sensor output voltage.

Abstract: Device, system, and method of providing biasing power. For example, an apparatus includes a voltage-controlled current source to provide biasing current to a Radio Frequency power amplifier based on a voltage of an incoming signal indicating a command to activate the Radio Frequency power amplifier, the incoming signal received from a Radio Frequency baseband module; and a current-reducing circuit to reduce the biasing current if the voltage of the incoming signal is greater than or equal to a voltage overdrive threshold.

Abstract: Device, system, and method of providing biasing power. For example, an apparatus includes a voltage-controlled current source to provide biasing current to a Radio Frequency power amplifier based on a voltage of an incoming signal indicating a command to activate the Radio Frequency power amplifier, the incoming signal received from a Radio Frequency baseband module; and a current-reducing circuit to reduce the biasing current if the voltage of the incoming signal is greater than or equal to a voltage overdrive threshold.