Unit cell circuitry of digital-to-analog converter circuitry having charge injection
AssigneeXilinx, Inc.
InventorsBob Walter Verbruggen, Christophe Erdmann
Life of this patent
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Abstract
A unit cell circuitry for a digital-to-analog converter (DAC) circuitry includes cascode circuitry, switch circuitry, and capacitor circuitry. The cascode circuitry is connected to a first output node and a second output node of the unit cell circuitry. The switch circuitry is connected to the cascode circuitry. The capacitor circuitry includes one or more capacitors connected to the switch circuitry. The switch circuitry connects the capacitor circuitry to the cascode circuitry to inject a charge onto the cascode circuitry. The unit cell circuitry outputs a signal based on the injected charge.
Claims20
A unit cell circuitry for a digital-to-analog converter (DAC) circuitry, the unit cell circuitry comprising:
- cascode circuitry connected to a first output node and a second output node of the unit cell circuitry;
- switch circuitry connected to the cascode circuitry;
- and
- capacitor circuitry comprising one or more capacitors connected to the switch circuitry, wherein the switch circuitry is configured to connect the capacitor circuitry to the cascode circuitry to inject a charge onto the cascode circuitry, and wherein the unit cell circuitry is configured to output a signal based on the injected charge.
A digital-to-analog converter (DAC) circuitry comprising:
- unit cell circuitries comprising outputs that are connected to a load, wherein a first unit cell circuitry of the unit cell circuitries comprises:
- cascode circuitry connected to a first output node and a second output node of the unit cell circuitry;
- switch circuitry connected to the cascode circuitry;
- and
- capacitor circuitry comprising one or more capacitors connected to the switch circuitry, wherein the switch circuitry is configured to connect the capacitor circuitry to the cascode circuitry to inject a charge onto the cascode circuitry, and wherein the unit cell circuitry is configured to output a signal based on the injected charge.
A computer system comprising:
- processing circuitry configured to process a signal in an analog domain;
- and
- digital-to-analog converter (DAC) circuitry having an output connected to the processing circuitry, and configured to convert an input signal from a digital domain to the analog domain, the DAC circuitry comprising:
- unit cell circuitry comprising:
- cascode circuitry connected to a first output node and a second output node of the unit cell circuitry;
- switch circuitry connected to the cascode circuitry;
- and
- capacitor circuitry comprising one or more capacitors connected to the switch circuitry, wherein the switch circuitry is configured to connect the capacitor circuitry to the cascode circuitry to inject a charge onto the cascode circuitry, and wherein the unit cell circuitry is configured to output a signal based on the injected charge.
Dependencies are inferred from the claim text.