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US 2022/0278693 A1Published application
Systems, methods, and devices for digital-to-analog conversion in data transmission
AssigneeMellanox Technologies, Ltd.
InventorsIgal Kushnir, Eshel Gordon, Roi Levi
Life of this patent
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Abstract
A digital to analog converter (DAC) includes a first amplifier configured to receive a first bit of a data block as an input and output a first signal based on a value of the first bit of the data block, a first filter circuit configured to filter the first signal, an output configured to output an analog signal based on a combination of the filtered first signal and a second signal that represents a value of a second bit of the data block.
Claims20
A digital to analog converter (DAC), comprising:
- a first amplifier that receives a first bit of a data block as an input and output a first signal based on a value of the first bit of the data block;
- a first filter circuit that filters the first signal, the first filter circuit including a first capacitance;
- an output that outputs an analog signal based on a combination of the filtered first signal and a second signal that represents a value of a second bit of the data block;
- and
- a second filter circuit that filters the second signal, the second filter circuit including a second capacitance separate from the first capacitance, wherein the output outputs the analog signal based on the filtered first signal and the filtered second signal.
2 more elements
A transmitter, comprising:
- a parallel input serial output (PISO) device that outputs digital serialized data based on digital parallel input data;
- and
- a digital to analog (DAC) converter including:
- a first amplifier that receives a first bit of a data block in the digital serialized data as an input and output a first signal based on a value of the first bit;
- a first filter circuit that filters the first signal, the first filter circuit including a first capacitance;
- a second amplifier that receives a second bit of the data block as an input and output a second signal based on a value of the second bit;
- a second filter circuit that filters the second signal, the second filter circuit including a second capacitance separate from the first capacitance;
- and
- an output that outputs an analog signal based on the filtered first and second signals.
6 more elements
A digital to analog converter (DAC), comprising:
- a plurality of branches, at least one branch including:
- a driver including an input and an output, the input of the driver being connected to a respective node that receives a signal that represents a respective bit in a data block;
- a filter including an input and an output, the input of the filter being connected to the output of the driver;
- and
- an output commonly connected to the plurality of branches and that outputs an analog signal, wherein, for the at least one branch, the filter includes a first resistance connected in parallel with a capacitance.
2 more elements
Dependencies are inferred from the claim text.