High speed dynamic comparator
AssigneeTexas Instruments Incorporated
InventorManar I. El-Chammas
Life of this patent
Estimating the term…
Abstract
A comparator circuit (FIG. 4) is disclosed. The circuit includes an amplifier circuit (300,302) arranged to produce an output signal (Vom,Vop). A first current source (312) is arranged to produce a first current through the amplifier circuit. A detector circuit (400) is arranged to produce a control signal (404) in response to a level of the output signal. A second current source (402) is arranged to produce a second current through the amplifier circuit in response to the control signal.
Claims20
A circuit, comprising:
- an amplifier circuit arranged to produce an output signal;
- a first current source arranged to produce a first current through the amplifier circuit;
- a detector circuit arranged to produce a control signal in response to a level of the output signal;
- and
- a second current source arranged to produce a second current through the amplifier circuit in response to the control output signal.
A method of producing an output signal from an amplifier, comprising:
- detecting a level of the output signal;
- producing a first current and a second current through the amplifier in response to a first level of the output signal;
- and
- producing only the first current through the amplifier in response to a second level of the output signal.
An analog-to-digital converter (ADC), comprising:
- an amplifier circuit arranged to produce an output signal;
- a first current source arranged to produce a first current through the amplifier circuit;
- a detector circuit arranged to produce a control signal in response to a level of the output signal;
- and
- a second current source arranged to produce a second current through the amplifier circuit in response to the control output signal.
Dependencies are inferred from the claim text.