Electronic device and method for an amplifier with resistive feedback
AssigneeTexas Instruments Deutschland GmbH
InventorsCarlo Peschke, Ernst Muellner
Life of this patent
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Abstract
An electronic device comprising an amplifier having at least a first input transistor of a first doping type. A first transistor is coupled with a channel as a feedback path between an output of the amplifier and a control gate of the first input transistor forming an input of the amplifier. A diode-coupled second transistor is coupled with a channel between a first current source and the output of the amplifier wherein a control gate of the first transistor is coupled between the first current source and the diode-coupled second transistor and the first transistor is of a second doping type which is opposite to the first doping type of the first input transistor of the amplifier.
Claims20
An electronic device comprising:
- an amplifier having at least a first input transistor of a first doping type;
- a first transistor coupled with a channel as a feedback path between an output of the amplifier and a control gate of the first input transistor forming an input of the amplifier;
- a diode-coupled second transistor being coupled with a channel between a first current source and the output of the amplifier;
- wherein a control gate of the first transistor is coupled between the first current source and the diode-coupled second transistor;
- and
- wherein the first transistor is of a second doping type which is opposite to the first doping type of the first input transistor of the amplifier.
A method of biasing an amplifier having a at least a first input transistor of a first doping type and a first transistor of a second doping type opposite to the first doping type which is coupled in a feedback path of the amplifier, the method comprising:
- biasing the control gate of the first transistor in the feedback path with a diode-coupled transistor that is coupled at one side to a first current source and to a control gate of the first transistor and at the other side to an output of the amplifier.
An RFID device comprising:
- an antenna comprising an inductor and a capacitor for receiving an RFID signal;
- an amplifier for amplifying the received RFID signal comprising:
- an electronic device comprising:
- an amplifier having at least a first input transistor of a first doping type;
- a first transistor coupled with a channel as a feedback path between an output of the amplifier and a control gate of the first input transistor forming an input of the amplifier;
- a diode-coupled second transistor being coupled with a channel between a first current source and the output of the amplifier;
- wherein a control gate of the first transistor is coupled between the first current source and the diode-coupled second transistor;
- and
- wherein the first transistor is of a second doping type which is opposite to the first doping type of the first input transistor of the amplifier.
Dependencies are inferred from the claim text.