Two-terminal synthesis resistor
AssigneeAnalog Devices International Unlimited Company
InventorNaoaki Nishimura
Life of this patent
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Abstract
A two-terminal resistor includes an operational amplifier (op amp) and also a current mirror having a first transistor, a second transistor, and a common node connected to the first transistor, the second transistor, and an output of the op amp. The two-terminal resistor also includes a resistor having a first side configured to be a first terminal of the two-terminal resistor, and a second side connected to an inverting input of the op amp, the first transistor. The two-terminal resistor additionally includes a second terminal of the two-terminal resistor connected to the second transistor, and a non-inverting input of the op amp.
Claims42
A two-terminal synthesis resistor, comprising:
- an operational amplifier (op amp);
- a current mirror having a first transistor, a second transistor, and a common node connected to the first transistor, the second transistor, and an output of the op amp;
- a resistor having a first side configured to be a first terminal of the two-terminal synthesis resistor, and a second side connected to an inverting input of the op amp, and the first transistor;
- and
- a second terminal of the two-terminal synthesis resistor connected to the second transistor, and a non-inverting input of the op amp.
A method for forming a two-terminal synthesis resistor, comprising:
- configuring a current mirror to have a first side with a first transistor and a second side with a second transistor, the first side of the current mirror and the second side of the current mirror connected to a common node that is also connected to an output of an operational amplifier (op amp);
- configuring a resistor to have a first side configured to be a first terminal of the two-terminal synthesis resistor, and a second side connected to an inverting input of the op amp, the first transistor;
- and
- configuring a second terminal of the two-terminal synthesis resistor to be connected to the second transistor, and a non-inverting input of the op amp.
Dependencies are inferred from the claim text.