Differential circuit and receiver with same
AssigneeThine Electronics, Inc.
InventorJun-Ichi Okamura
Life of this patent
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Abstract
A differential circuit including a differential amplifier circuit having a differential element provided in a signal input circuit, a constant current source connected to the differential element, and loads respectively connected to the differential element, and a source follower circuit that outputs a differential voltage based on voltage drops developing across the loads, includes a current supply circuit that supplies a given current to the loads connected in series with the differential element when the differential element is off.
Claims10
A differential circuit including a differential amplifier circuit having a differential element provided in a signal input circuit, a constant current source connected to the differential element, and loads respectively connected to the differential element;
- and a source follower circuit that outputs a differential voltage based on voltage drops developing across the loads,
- comprising a current supply circuit that supplies a given current to the loads connected in series with the differential element when the differential element is off.
A differential circuit including a first differential amplifier circuit having a first differential element provided in a signal input circuit, a first constant current source connected to the first differential element, and a first and a second loads respectively connected to the first differential element;
- a second differential amplifier circuit having a second differential element provided in the signal input circuit, a second constant current source connected to the second differential element, and a third and a fourth loads respectively connected to the second differential element;
- a first source follower circuit that outputs a first differential voltage based on voltage drops developing across the first and second loads;
- and a second source follower circuit that outputs a second differential voltage based on the voltage drops developing across the third and fourth loads,
- comprising a first current supply circuit that supplies a given current to the first and second loads when the first differential element is off;
- and
- a second current supply circuit that supplies the given current to the third and fourth loads when the second differential element is off.
A receiving device having a differential circuit including a differential amplifier circuit having a differential element provided in a signal input circuit, a constant current source connected to the differential element, and loads respectively connected to the differential element;
- and a source follower circuit that outputs a differential voltage based on voltage drops developing across the loads,
- comprising a current supply circuit that supplies a given current to the loads connected in series with the differential element when the differential element is off.
A receiving device having a differential circuit including a first differential amplifier circuit having a first differential element provided in a signal input circuit, a first constant current source connected to the first differential element, and a first and a second loads respectively connected to the first differential element;
- a second differential amplifier circuit having a second differential element provided in the signal input circuit, a second constant current source connected to the second differential element, and a third and a fourth loads respectively connected to the second differential element;
- a first source follower circuit that outputs a first differential voltage based on voltage drops developing across the first and second loads;
- and a second source follower circuit that outputs a second differential voltage based on the voltage drops developing across the third and fourth loads,
- comprising a first current supply circuit that supplies a given current to the first and second loads when the first differential element is off;
- and
- a second current supply circuit that supplies the given current to the third and fourth loads when the second differential element is off.
Dependencies are inferred from the claim text.