Current conditioning apparatus with NFET current mirror
AssigneeSkyworks Solutions, Inc.
InventorsJohn Jackson Nisbet, Leslie Paul Wallis, Guillaume Alexandre Blin
Life of this patent
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Abstract
Examples of the disclosure include a current-conditioning apparatus comprising a current mirror circuit including an input transistor adapted to receive an input current from an injection node and including an output transistor adapted to replicate in response to the received input current an output current with a predefined current mirror ratio, and a differential amplifier adapted to provide a negative feedback loop between the injection node of the apparatus and a control terminal of the input transistor of the current mirror circuit.
Claims20
A current conditioning apparatus comprising:
- a first current mirror circuit including
- an input transistor adapted to receive an input current from an injection node, and
- an output transistor adapted to replicate in response to the received input current an output current with a predefined current mirror ratio, the output current being supplied as a bias current to a multi-level cascode transistor stack of a signal amplifier;
- and
- a differential amplifier including at least one differential amplifier current mirror circuit, the differential amplifier being adapted to provide a negative feedback loop between the injection node of the apparatus and a control terminal of the input transistor of the first current mirror circuit.
A signal amplifier comprising:
- a multi-level cascode transistor stack with a quiescent bias current provided by a current conditioning apparatus having a current mirror circuit including an input transistor adapted to receive an input current from an injection node and including an output transistor adapted to provide in response to the received input current a replicated output current with a predefined current mirror ratio and having a differential amplifier including at least one differential amplifier current mirror circuit, the differential amplifier being adapted to provide a negative feedback loop between the injection node and a control terminal of the input transistor of the current mirror circuit.
A current conditioning apparatus comprising:
- a current mirror circuit including an input transistor adapted to receive an input current from an injection node and including an output transistor adapted to replicate in response to the received input current an output current with a predefined current mirror ratio;
- and
- a differential amplifier including at least one differential amplifier current mirror circuit, the differential amplifier being adapted to provide a negative feedback loop between the injection node of the apparatus and a control terminal of the input transistor of the current mirror circuit, the negative feedback loop including capacitors connected to the injection node to provide frequency stability to the negative feedback loop.
A current conditioning apparatus comprising:
- a current mirror circuit including an input transistor adapted to receive an input current from an injection node and including an output transistor adapted to replicate in response to the received input current an output current with a predefined current mirror ratio;
- and
- a differential amplifier including
- at least one differential amplifier current mirror circuit, the differential amplifier being adapted to provide a negative feedback loop between the injection node of the apparatus and a control terminal of the input transistor of the current mirror circuit, and
- a safety circuit provided to maintain a voltage drop along each transistor of the differential amplifier within a safe operation voltage range.
Dependencies are inferred from the claim text.