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US 11,115,043 B1Granted
Digital-to-analog conversion device and digital-to-analog conversion system
AssigneeRohde & Schwarz GmbH & Co. KG
InventorsMartin Simon, Bernhard Soehl
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Abstract
A digital-to-analog conversion device and a digital-to-analog conversion system with multiple digital-to-analog conversion cores is provided. At least some of the multiple digital-to-analog conversion cores may be operated with different clock signals, especially with clock signals of different clock frequencies. For this purpose, each digital-to-analog conversion stage is provided with multiple different clock signals and each stage individually selects one of the multiple clock signals.
Claims16
A digital-to-analog conversion device, comprising:
- a main clock input for receiving a number of one or more main clock signals and providing at least two clock signals based on the received number of one or more main clock signals, wherein each of the at least two clock signals has a different clock frequency;
- and
- multiple digital-to-analog conversion units, each digital-to-analog conversion unit comprising:
- at least two clock inputs for receiving the at least two clock signals provided by the main clock input;
- a digital input for receiving a digital data signal;
- an interpolator for interpolating the received digital data signal by a predetermined interpolation factor and outputting an interpolated digital data signal;
- and
- a digital-to-analog core for receiving the interpolated digital data signal and converting the received interpolated digital data signal to an analog signal according to one of the clock signals received by the at least two clock inputs.
5 more elements
A digital-to-analog conversion system, comprising:
- a digital-to-analog conversion device, comprising:
- a main clock input for receiving a number of one or more main clock signals and providing at least two clock signals based on the received number of one or more main clock signals, wherein each of the at least two clock signals has a different clock frequency;
- and
- multiple digital-to-analog conversion units, each digital-to-analog conversion unit comprising:
- at least two clock inputs for receiving the at least two clock signals provided by the main clock input;
- a digital input for receiving a digital data signal;
- an interpolator for interpolating the received digital data signal by a predetermined interpolation factor and outputting an interpolated digital data signal;
- and
- a digital-to-analog core for receiving the interpolated digital data signal and converting the received interpolated digital data signal to an analog signal according to one of the clock signals received by the at least two clock inputs;
- and
- a clock generator for generating at least one main clock signal and providing the generated at least one main clock signal to the main clock input of the digital-to-analog conversion device.
8 more elements
Dependencies are inferred from the claim text.