Digital-to-analog converter glitch reduction techniques
AssigneeAnalog Devices International Unlimited Company
InventorsMichael E. Harrell, Alan Rizada Kilantang, Angel Rael, Murat Demirkan
Life of this patent
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Abstract
An electronic system includes a digital-to-analog converter (DAC) circuit to provide a drive signal to a second circuit that provides a system output, and a control circuit connected to an input of the DAC circuit. The control circuit is configured to receive a target signal at an input of the control circuit, provide a control circuit output to the input of the DAC circuit according to the target signal, detect when a transition of the DAC circuit results in a glitch signal at an output of the DAC circuit, and provide a compensation signal to the DAC circuit to reduce a magnitude of the glitch signal.
Claims20
An electronic system comprising:
- a digital-to-analog converter (DAC) circuit to provide a drive signal to a second circuit, wherein the second circuit provides a system output;
- and
- a control circuit connected to an input of the DAC circuit and configured to:
- receive a target signal at an input of the control circuit and provide a control circuit output to the input of the DAC circuit according to the target signal;
- detect when a transition of the DAC circuit results in a glitch signal at an output of the DAC circuit;
- and
- provide a compensation signal to the DAC circuit to reduce a magnitude of the glitch signal, wherein a time average of the compensation signal depends on the magnitude of the glitch signal.
A method of compensation for an electronic system to reduce signal artifacts, the method comprising:
- setting an input of a digital-to-analog converter (DAC) circuit to set a system output of the electronic system;
- detecting, using a control circuit, when a transition of the DAC circuit results in a glitch signal at an output of the DAC circuit;
- and
- adding a compensation signal to the DAC circuit to reduce a magnitude of the glitch signal, wherein a time average of the compensation signal depends on the magnitude of the glitch signal.
A non-transitory computer readable storage medium including instructions, that when performed by a processor of a control circuit of a data converter system, cause the control circuit to perform actions comprising:
- receiving a target signal and setting an input to a digital-to-analog converter (DAC) circuit to set a system output of the data converter system according to the target signal;
- detecting when a transition of the DAC circuit results in a glitch signal at an output of the DAC circuit;
- and
- providing a compensation signal to the DAC circuit to reduce a magnitude of the glitch signal, wherein a time average of the compensation signal depends on the magnitude of the glitch signal.
Dependencies are inferred from the claim text.