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    • 5. 发明授权
    • Voltage-to-current conversion circuit and OTA using the same
    • 电压 - 电流转换电路和OTA使用相同
    • US06661289B2
    • 2003-12-09
    • US10176063
    • 2002-06-21
    • Takahide SatoNobuo FujiiSigetaka TakagiKazuyuki Wada
    • Takahide SatoNobuo FujiiSigetaka TakagiKazuyuki Wada
    • H03F316
    • G05F1/561G05F3/242
    • A voltage-to-current conversion circuit composed of MOSFETs of the same polarity and an OTA with Rail-to-Rail with a simple configuration that uses the same have been disclosed. The voltage-to-current conversion circuit comprises a first MOSFET, to which a fixed drain-source voltage is applied all the time, and which generates a first current signal for an input voltage, a second MOSFET, which has the same polarity as that of the first MOSFET, to which the fixed drain-source voltage is applied all the time, and which generates a second current signal complementary to the first current signal for the input voltage, and a difference current operation circuit that performs the operation of subtraction between the first current signal and the second current signal, thereby an output current is generated in accordance with the input voltage.
    • 已经公开了由具有相同极性的MOSFET组成的电压 - 电流转换电路和具有使用它们的简单配置的轨至轨的OTA。 电压 - 电流转换电路包括第一MOSFET,一直施加固定的漏极 - 源极电压,并且其产生用于输入电压的第一电流信号,第二MOSFET具有与之相同极性的第二MOSFET 所述第一MOSFET的固定漏极 - 源极电压一直被施加到所述第一MOSFET,并且产生与所述输入电压的所述第一电流信号互补的第二电流信号;以及差动电流运算电路, 第一电流信号和第二电流信号,从而根据输入电压产生输出电流。