Differential amplifier
AssigneeNEC Electronics Corporation
InventorTachio Yuasa
Life of this patent
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Abstract
A differential amplifier includes a first differential pair formed by transistors of a first conductivity type, to receive input signals and output first differential-mode currents, a first current amplifier section to output a first output source current and a first output sink current to a first output terminal and a second output terminal, respectively, based on the first differential-mode currents, a second differential pair formed by transistors of a second conductivity type, to receive the input signals and output second differential-mode currents, and a second current amplifier section to output a second output source current and a second output sink current to the first output terminal and the second output terminal, respectively, based on the second differential-mode currents.
Claims5
A differential amplifier comprising:
- a first differential pair formed by transistors of a first conductivity type, to receive input signals and output first differential-mode currents;
- a first current amplifier section to output a first output source current and a first output sink current to a first output terminal and a second output terminal, respectively, based on the first differential-mode currents;
- a second differential pair formed by transistors of a second conductivity type, to receive the input signals and output second differential-mode currents;
- and
- a second current amplifier section to output a second output source current and a second output sink current to the first output terminal and the second output terminal, respectively, based on the second differential-mode currents.
A differential amplifier comprising:
- a first differential pair formed by transistors of a first conductivity type, to receive input signals and output first differential-mode currents;
- a first reference current source to output a first reference source current and a first reference sink current;
- a first current amplifier section to output a first output source current generated based on a difference between the first reference source current and one first differential-mode current included in the first differential-mode currents to a first output terminal, and output a first output sink current generated based on a difference between the first reference sink current and the other first differential-mode current included in the first differential-mode currents to a second output terminal;
- a second differential pair formed by transistors of a second conductivity type, to receive the input signals and output second differential-mode currents;
- a second reference current source to output a second reference source current and a second reference sink current;
- and
- a second current amplifier section to output a second output source current generated based on a difference between the second reference source current and one second differential-mode current included in the second differential-mode currents to the first output terminal, and output a second output sink current generated based on a difference between the second reference sink current and the other second differential-mode current included in the second differential-mode currents to the second output terminal.
Dependencies are inferred from the claim text.