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US 2022/0045711 A1Published application
Time division duplexing receiver with constant impedance for a broadband line terminal with asynchronous transmission
AssigneeMaxLinear, Inc.
InventorsChristian Fleischhacker, Rainer Strobel
Life of this patent
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Abstract
A line driver circuit having an amplifier circuit having a differential output, the differential output including a first output terminal and a second output terminal and an impedance switching circuit coupled between the first output terminal and the second output terminal of the amplifier circuit, wherein the impedance switching circuit is configured to reduce or maintain impedance across the first output terminal and the second output terminal of the amplifier circuit.
Claims20
A line driver circuit, comprising:
- an amplifier circuit having a differential output, the differential output comprising a first output terminal and a second output terminal;
- and
- an impedance switching circuit coupled between the first output terminal and the second output terminal of the amplifier circuit, wherein the impedance switching circuit is configured to reduce or maintain impedance across the first output terminal and the second output terminal of the amplifier circuit.
A method to operate a line driver circuit, the method comprising:
- operating an impedance switching circuit at an output of an amplifier in a first mode during a first operation, wherein the amplifier is activated, wherein the impedance switching circuit establishes a first impedance configuration during the first operation;
- and
- operating the impedance switching circuit at the output of the amplifier in a second mode during a second operation, wherein the amplifier is deactivated, wherein the impedance switching circuit establishes a second impedance configuration during the second operation;
- wherein the impedance switching circuit is configured to reduce or maintain impedance at an output of the amplifier.
1 more element
Dependencies are inferred from the claim text.