Split amplifiers with improved linearity

Split amplifiers with configurable gain and linearization circuitry are disclosed. An apparatus includes first (430) and second (440) amplifier circuits and a linearization circuit (420), which may be part of an amplifier. The first (430) and second (440) amplifier circuits are coupled in parallel a...

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Hauptverfasser: CHANG LIUNG, YOUSSEF AHMED A
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:Split amplifiers with configurable gain and linearization circuitry are disclosed. An apparatus includes first (430) and second (440) amplifier circuits and a linearization circuit (420), which may be part of an amplifier. The first (430) and second (440) amplifier circuits are coupled in parallel and to an amplifier input (X). The linearization circuit (420) is also coupled to the amplifier input (X). The first (430) and second (440) amplifier circuits are enabled in a high-gain mode. One of the first (430) and second (440) amplifier circuits is enabled in a low-gain mode. The linearization circuit (420) is enabled in the second mode and disabled in the first mode. The amplifier is split into multiple sections. Each section includes an amplifier circuit and is a fraction of the amplifier. High linearly may be obtained using one amplifier circuit and the linearization circuit in the low-gain mode.