Output stage for high-speed comparator circuits
AssigneeSTMicroelectronics S.r.l.
InventorGiovanni Galli
Life of this patent
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Abstract
A final stage for a high-speed comparator, and a method of driving an electric load having a capacitive component are disclosed. The final stage comprises a first or pull-up component and a second or pull-down component which are connected in series with each other between a first or supply voltage reference and a second voltage reference. A dynamic drive device and a separate static drive device are coupled to each component of the output stage. Each component of the final stage is driven separately according to whether it is in a static or a dynamic load condition.
Claims22
An output stage for an integrated electronic circuit, specifically for a driver circuit of an electric load having at least one capacitive component, the output stage comprising:
- a final stage having a pull-up component and a pull-down component connected between a first voltage reference and a second voltage reference;
- and
- dynamic drive devices respectively coupled to each component and a separate static drive device coupled to each component of said final stage, wherein the final stage or electric load are driven with dual drive, or with static or dynamic drive, according to a circuit type of the final stage.
A method of driving an electric load having a capacitive component, the method comprising:
- providing an electronic driver circuit which includes a final stage comprised of a pull-up component and a pull-down component connected with each other between a first supply voltage reference and a second voltage reference;
- and
- providing a dual, static and dynamic, drive for either said final stage or said capacitive load according to whether the final stage is a bipolar, MOS or combined type.
An integrated driver circuit for driving an electric load, the driver circuit comprising:
- a driver input at which a control signal is received;
- a first transistor and a second transistor connected to each other between a first voltage reference and a second voltage reference;
- a static driver having an input coupled to the driver input and a first output coupled to a control terminal of the first transistor;
- and
- a first dynamic driver having an input coupled to the driver input and an output coupled to the first transistor, the first dynamic driver being structured to drive the load during a changeover condition in the control signal and for a predetermined time period, wherein the first and second transistors or the electric load are driven with dual drive, or with static or dynamic drive, based on circuit types of the first and second transistors.
Dependencies are inferred from the claim text.