Importance

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Abstract

A differential amplifier includes a pair of first and second transistors connected together. The first transistor includes a first conduction terminal, and a second conduction terminal forming a first output node of the amplifier. The second transistor includes a first conduction terminal connected to the first conduction terminal of the first transistor, and a second conduction terminal forming a second output node of the amplifier. A first inductive load is connected between the first output node and a supply reference, and a second inductive load is connected between the second output node and the supply reference. A limiting network limits output voltages on the first and second output nodes, and includes a first resistor connected to the first output node, and a second resistor connected to the second output node. The first and second resistors also connected together in series at a common intermediate node. A first analog switch is connected to the first resistor and to the supply reference, and a second analog switch connected to the second resistor and the supply reference via the first analog switch. The first and second analog switches are turned on when a voltage on the common intermediate node exceeds a threshold.

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First Claim