Abstract: An input signal (Vin) is divided into n (?3) number of divided signals which are weighted by first weights (ki). The weighted divided signals are processed by n number of signal processing means 1 to n performing the same signal processing. The processed divided signals are weighted by second weights (li) and added to obtain an output signal (Vout). By selecting the first weights (ki) and the second weights (li), it is possible to eliminate noise or eliminate distortion.

Abstract: 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.

Abstract: 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.