Patent classifications
H
ELECTRICITY
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H03
ELECTRONIC CIRCUITRY
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H03F
AMPLIFIERS
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2203/00
Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
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H03F2203/45
Indexing scheme relating to differential amplifiers
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H03F2203/45558
the IC being coupled at the sources of the source coupled pair
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H03F2203/45558

AMPLIFIER CIRCUIT USING VOLTAGE-TO-CURRENT CONVERSION TO ACHIEVE UNITY FEEDBACK FACTOR AND INPUT COMMON-MODE REJECTION FOR LINEAR AMPLIFIER AND ASSOCIATED ENVELOPE TRACKING SUPPLY MODULATOR USING THE SAME
20220045647 · 2022-02-10 · ·

An amplifier circuit includes a voltage-to-current conversion circuit and a current-to-voltage conversion circuit. The voltage-to-current conversion circuit generates a current signal according to an input voltage signal, and includes an operational transconductance amplifier (OTA) used to output the current signal at an output port of the OTA. The current-to-voltage conversion circuit generates an output voltage signal according to the current signal, and includes a linear amplifier (LA), wherein an input port of the LA is coupled to the output port of the OTA, and the output voltage signal is derived from an output signal at an output port of the LA.