CURRENT INJECTOR CIRCUIT FOR SUPPLYING A LOAD TRANSIENT IN AN INTEGRATED CIRCUIT
First Claim
1. A current injector circuit comprising:
- a clock signal modulating circuit having a first input for receiving a clock signal, a second input for receiving a control signal, and an output;
a first current injector having an input coupled to the output of the clock signal modulating circuit, and an output coupled to a power supply voltage terminal for providing a first predetermined current;
a feedback circuit coupled between the power supply voltage terminal and a second input of the clock modulating circuit, the feedback circuit for providing the control signal for controlling the clock modulating circuit, and in response, the first current injector for providing the first predetermined current;
a first input signal modulating circuit having a first input for receiving an input signal, a second input for receiving the control signal, and an output; and
a second current injector having an input coupled to the output of the first input signal modulating circuit, and an output for providing a second predetermined current.
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Accused Products
Abstract
A current injector circuit comprises a clock modulating circuit, a first current injector, a feedback circuit, a first input modulating circuit and a second current injector. The clock modulating circuit receives a clock, a control signal, and an output. The first current injector has an input coupled to the clock modulating circuit, and an output coupled to a power supply terminal for providing a first current. The feedback circuit is coupled between the power supply terminal and another input of the clock modulating circuit. The feedback circuit is for providing the control signal for controlling the clock modulating circuit. The first current injector provides the first current in response to the clock modulating circuit. The first input modulating circuit receives an input signal, the control signal, and an output. The second current injector has an input coupled to the first input modulating circuit, and an output for providing a second current.
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Citations
20 Claims
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1. A current injector circuit comprising:
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a clock signal modulating circuit having a first input for receiving a clock signal, a second input for receiving a control signal, and an output; a first current injector having an input coupled to the output of the clock signal modulating circuit, and an output coupled to a power supply voltage terminal for providing a first predetermined current; a feedback circuit coupled between the power supply voltage terminal and a second input of the clock modulating circuit, the feedback circuit for providing the control signal for controlling the clock modulating circuit, and in response, the first current injector for providing the first predetermined current; a first input signal modulating circuit having a first input for receiving an input signal, a second input for receiving the control signal, and an output; and a second current injector having an input coupled to the output of the first input signal modulating circuit, and an output for providing a second predetermined current. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A current injector circuit comprising:
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a differential amplifier having a first input terminal coupled to a first supply voltage terminal, a second input terminal coupled to receive a reference voltage, and an output terminal; a clock modulating circuit having a first input terminal coupled to the output terminal of the differential amplifier, a second input terminal coupled to receive a clock signal, and an output terminal; a master current injector having an input terminal coupled to the output terminal of the clock modulating circuit, and an output terminal coupled to the first supply voltage terminal; a first input modulating circuit having a first input terminal coupled to the output terminal of the differential amplifier, a second input terminal coupled to receive an input signal, and an output terminal; and a first slave current injector having an input terminal coupled to the output terminal of the first input modulating circuit, and an output terminal for supplying an output current. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A current injector circuit comprising:
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a clock signal modulating circuit having a first input for receiving a clock signal, a second input for receiving a control signal, and first and second outputs; a first current injector comprising; a first pair of cross-coupled inverters having first and second storage nodes, a power supply terminal for receiving a first power supply voltage, and an output terminal for providing a first predetermined current; a first capacitor having a first plate electrode coupled to the first storage node, and a second plate electrode coupled to the first output of the clock signal modulating circuit; and a second capacitor having a first plate electrode coupled to the second storage node, and a second plate electrode coupled to the second output of the clock signal modulating circuit; a feedback circuit coupled between the output terminal of the first pair of cross-coupled inverters and the second input of the clock signal modulating circuit, the feedback circuit providing the control signal for controlling the clock modulating circuit, and in response, the first current injector providing the first predetermined current; an input signal modulating circuit having a first input for receiving an input signal, a second input for receiving the control signal, and first and second outputs; and a second current injector comprising; a second pair of cross-coupled inverters having first and second storage nodes, a power supply terminal for receiving the first power supply voltage, and an output terminal for providing a second predetermined current; a third capacitor having a first plate electrode coupled to the first storage node of the second pair of cross-coupled inverters, and a second plate electrode coupled to the first output of the input signal modulating circuit; and a fourth capacitor having a first plate electrode coupled to the second storage node of the second pair of cross-coupled inverters, and a second plate electrode coupled to the second output of the input signal modulating circuit. - View Dependent Claims (17, 18, 19, 20)
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Specification