Amplifier circuit with temperature compensation
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United States of America
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Dec 24, 2024
Grant Date -
Dec 30, 2021
app pub date -
Jun 16, 2021
filing date -
Jun 16, 2021
priority date (Note) -
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Abstract
There is disclosed an amplifier circuit comprising: an amplifier having input and output terminals; a temperature dependent variable impedance unit comprising: a first terminal, a second terminal and a variable impedance unit control terminal; a transistor comprising a transistor control terminal coupled to the variable impedance unit control terminal; a first resistor coupled in parallel with the conduction channel; a capacitor coupled in series with the conduction channel between the conduction channel and one of: the first terminal; and the second terminal; and wherein: the first terminal is coupled to one of: the input terminal and the output terminal; the second terminal is for coupling to a reference node; and the variable impedance unit control terminal is configured to receive a control signal that is based on a measured temperature indicative of a temperature of the amplifier circuit and thereby provide a temperature dependent variable impedance for the amplifier circuit.
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