Offset system and method for multi-bit digital-to-analog converters
AssigneeApple Inc.
InventorsFrancesco Conzatti, Patrick Torta, Lukas Doerrer, Marco Bresciani, Claus Kropf
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Abstract
Methods adapted for digital-to-analog conversion compensation and systems are described. In a compensation method, inputs of a digital-to-analog converter (DAC) are adjusted to provide an even number inputs for the DAC. Further, one or more analog input signals are converted to generate one or more corresponding digital output signals. The one or more digital output signals are compensated to compensate for the adjustment of the inputs of the DAC.
Claims22
A digital-to-analog conversion compensation method, comprising:
- adjusting a number of digital inputs signals to a digital-to-analog converter (DAC) from an odd number of digital input signals to an even number of digital input signals;
- converting, using the DAC, the even number of digital input signals to generate corresponding analog output signals;
- and
- compensating the analog output signals to compensate for the adjustment of the number of digital input signals to generate an odd number of analog output signals corresponding to the odd number of digital input signals.
A digital-to-analog conversion system, comprising:
- a digital-to-analog converter (DAC);
- a digital offset generator that is configured to adjust a number of digital inputs signals to a digital-to-analog converter (DAC) from an odd number of digital input signals to an even number of digital input signals, wherein the DAC is configured to convert the even number of digital input signals to generate corresponding analog output signals;
- and
- an analog offset compensator that is configured to compensate the analog output signals to compensate for the adjustment of the number of digital input signals to generate an odd number of analog output signals corresponding to the odd number of digital input signals.
A digital-to-analog converter (DAC), comprising:
- a converter that is configured to:
- receive a digital offset value and an odd number of digital inputs signals to the DAC;
- adjust the odd number of digital inputs signals based on the digital offset value to generate an even number of digital input signals;
- and
- convert the even number of digital input signals to generate corresponding analog output signals;
- and
- an analog offset compensator that is configured to compensate the analog output signals to generate an odd number of analog output signals corresponding to the odd number of digital input signals.
Dependencies are inferred from the claim text.