BIQUADRATIC CELL ARCHITECTURE FOR ANALOG FILTER APPROPRIATE TO LOW VOLTAGE/LOW POWER

摘要

A quadratic cell structure of an analog filter adapted for low voltage/low power is provided to design a filter capable of operating at a low supply voltage even with the same operational amplifier configuration. A quadratic cell structure of an analog filter adapted for low voltage/low power includes a low voltage induction resistor connected between a first node of a quadratic cell input terminal of an analog filter and a ground in parallel. An operational amplifier(10) is operated by an input voltage inputted from the first node of the cell input terminal decided by a low voltage induction resistor. The first node of the cell input terminal is a node next from a cell input terminal in the quadratic cell structure of an analog filter.