SIMPLIFIED NAUTA OPERATIONAL TRANSCONDUCTANCE AMPLIFIER

摘要

A simplified Nauta operational transconductance amplifier is provided to efficiently improving a quality factor by independently controlling the quality factor irrespective of an influence on a transconductance for a frequency characteristic of a filter. A simplified Nauta operational transconductance amplifier includes a first parallel inverter(21), a second parallel inverter(22), a first cross feedback inverter(23), and a second cross feedback inverter(24). The first parallel inverter receives a first input voltage through an input terminal. The second parallel inverter receives a second input voltage through the input terminal. An input terminal of the first cross feedback inverter is coupled to an output terminal of the second parallel conversion cell. An output terminal of the first cross feedback inverter is coupled to an output terminal of the first parallel conversion cell. An input terminal of the second cross feedback inverter is coupled to the output terminal of the first parallel conversion cell. An output terminal of the second cross feedback inverter is coupled to the output terminal of the second parallel conversion cell.