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US 2026/0205082 A1Published application
Transconductance gain calibration circuit
AssigneeRealtek Semiconductor Corp.
InventorsSie-Siou Jhang Jian, Chih-Lung Chen
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AssigneeRealtek Semiconductor Corp.
InventorsSie-Siou Jhang Jian, Chih-Lung Chen
Estimating the term…
A transconductance gain calibration circuit includes a constant voltage source, a first transconductance amplifier, a second transconductance amplifier, and a comparison module. The constant voltage source is configured to generate a reference voltage. The first transconductance amplifier responds to the reference voltage to produce a constant current. The second transconductance amplifier responds to the reference voltage to produce a variation current. The comparison module includes a first potentiometer, a reference resistor, and a comparison circuit. The first potentiometer is coupled to the first transconductance amplifier and is configured to generate a variation voltage based on the constant current and an adjustable resistance. The reference resistor is coupled to the second transconductance amplifier and is configured to generate a constant voltage based on the variation current and a designed resistance value. The comparison circuit is configured to compare the variation voltage with the constant voltage to adjust the adjustable resistance.
A transconductance calibration circuit, comprising:
Dependencies are inferred from the claim text.