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A Rail-to-Rail CMOS Voltage Follower under Low Power Supply Voltage
Kawori TAKAKUBO Hajime TAKAKUBO Shigetaka TAKAGI Nobuo FUJII
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/02/01
Print ISSN: 0916-8508
Type of Manuscript: Special Section PAPER (Special Section on Analog Circuit Techniques Supporting the System LSI Era)
CMOS voltage follower, AB push-pull, rail-to-rail operation, low power supply,
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Voltage follower is one of the most useful building blocks in analog circuits. This paper proposes a voltage follower composed of a complementary pair of p-channel MOS(PMOS) and n-channel MOS (NMOS) differential amplifiers which operates under low power supply. The proposed circuit has a rail-to-rail dynamic range by combining complementary differential amplifiers.