Digital-to-analog converter circuits and related devices
AssigneeSkyworks Solutions, Inc.
InventorsMiles Reuben THOMPSON, Wai Laing LEE, Rie SASAKAWA, Xudong ZHAO
Life of this patent
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Abstract
A digital-to-analog converter (DAC) can include an array having a total number of bit cells, and a control system configured to activate a selected number of the total number of bit cells and to deactivate the remaining bit cells. The selected number can be variable, such that the array consumes a quiescent current that depends on the selected number. The control system can be further configured to change the selected number when a signal condition exceeds a threshold duration.
Claims18
A digital-to-analog converter (DAC) architecture comprising:
- an array having a total number of bit cells;
- and
- a control system configured to activate a selected number of the total number of bit cells and to deactivate the remaining bit cells, the selected number being variable, such that the array consumes a quiescent current that depends on the selected number, the control system further configured to change the selected number when a signal condition exceeds a threshold duration.
(canceled)
A module comprising:
- a packaging substrate;
- and
- a digital-to-analog converter (DAC) system implemented on the packaging substrate, the DAC system including an array having a total number of bit cells, the DAC system further including a control system configured to activate a selected number of the total number of bit cells and to deactivate the remaining bit cells, the selected number being variable, such that the array consumes a quiescent current that depends on the selected number, the control system further configured to change the selected number when a signal condition exceeds a threshold duration.
A wireless device comprising:
- an antenna for receiving a wireless signal;
- a driver configured to convert a digital signal representative of the received wireless signal into an analog signal with a digital-to-analog converter (DAC) system, the DAC system including an array having a total number of bit cells, the DAC system further including a control system configured to activate a selected number of the total number of bit cells and to deactivate the remaining bit cells, the selected number being variable, such that the array consumes a quiescent current that depends on the selected number, the control system further configured to change the selected number when a signal condition exceeds a threshold duration;
- and
- a speaker in communication with the driver and configured to generate sound waves based on the analog signal.
Dependencies are inferred from the claim text.