Reference generation circuit for maintaining temperature-tracked linearity in amplifier with adjustable high-frequency gain

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United States of America

PATENT NO 12224715
APP PUB NO 20230021200A1
SERIAL NO

17935599

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Abstract

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Equalizing an input signal according to a receiver equalizer peaking circuit having a capacitor FET (CFET) providing a capacitive value and a resistor FET (RFET) providing a resistive value, generating a capacitor control voltage at a gate of the CFET using a capacitor controller DAC based on a first reference voltage, and a RFET control voltage at a gate of the RFET using a resistor controller DAC based on a second reference voltage, generating the first reference voltage using a replica input FET, the first reference voltage varying according to a threshold voltage (Vt) of an input FET, providing the first reference voltage to the capacitor controller DAC, generating the second reference voltage using a replica RFET, the second reference voltage varying with respect to the first reference voltage and a Vt of the replica of the RFET, and providing the second reference voltage to the resistor controller DAC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Rattan, Suhas London, GB 10 76

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