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Wide-Input Range Linear Voltage-to-Current Converter Using Equivalent MOSFETs without Cutoff Region
Kazuyuki WADA Shigetaka TAKAGI Nobuo FUJII
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/02/01
Print ISSN: 0916-8508
Type of Manuscript: Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
voltage-to-current converter, low voltage, input range, low power, equivalent MOSFET,
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A building block for widening an input range under low power-supply voltages is proposed and the block is used in a popular linearization technique for voltage-to-current converters. The block employs two MOSFETs each of which actively works when and only when the other is in cutoff region. Accurate level shift circuits for the control of the MOSFETs enable such exclusive operation. Simulation results show that the complementary MOSFETs perform as an equivalent MOSFET without any cutoff region. It is also confirmed that the novel linear voltage-to-current converter is effective for not only a wide input range but also low-power consumption.