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US 9,438,264 B1Granted
High-speed capacitive digital-to-analog converter and method thereof
AssigneeRealtek Semiconductor Corp.
InventorChia-Liang (Leon) Lin
Life of this patent
Estimating the term…
Abstract
A circuit having a capacitor coupling a first circuit node to a second circuit node; a first switch network configured to couple the second circuit node to either a first reference voltage or a second reference voltage in accordance with a value of a logical signal; and a second switch network configured to couple the second circuit node to a third reference voltage when the logical signal undergoes a transition but decouple the second circuit node from the third reference voltage when the logical signal finishes the transition.
Claims17
A circuit comprising:
- a capacitor coupling a first circuit node to a second circuit node;
- a first switch network circuit coupling the second circuit node to either a first reference voltage or a second reference voltage in accordance with a value of a logical signal;
- and
- a second switch network circuit coupling the second circuit node to a third reference voltage when the logical signal undergoes a transition but decouple the second circuit node from the third reference voltage when the logical signal finishes the transition.
1 more element
A circuit comprising:
- a capacitor coupling a first circuit node to a second circuit node;
- a first switch network circuit coupling the second circuit node to either a first reference voltage or a second reference voltage in accordance with a value of a logical signal;
- and
- a second switch network circuit coupling the second circuit node to a third reference voltage when the logical signal undergoes a transition but decouple the second circuit node from the third reference voltage when the logical signal finishes the transition, wherein the second switch network comprises a serial connection of a switch device controlled by the logical signal and a valve device that automatically shuts off itself when the logical signal finishes the transition.
1 more element
A method comprising:
- incorporating a capacitor coupling a first circuit node to a second circuit node;
- incorporating a first switch network circuit coupling the second circuit node to either a first reference voltage or a second reference voltage in accordance with a value of a logical signal;
- and
- incorporating a second switch network circuit temporarily coupling the second circuit node to a third reference voltage when the logical signal is undergoing a transition and decouple the second circuit node from the third reference voltage when the transition is finished.
1 more element
Dependencies are inferred from the claim text.