A digitally controlled floating resistor using CMOS translinear cells

A CMOS based digitally controlled floating resistor (DCFR) is proposed using translinear cells. The proposed DCFR consists of two CMOS translinear cells along with a CMOS current-division network (CDN). The proposed circuit is designed in 0.35 μm technology and works at power supply of ±1.6V. DCFR is analyzed as well as SPICE simulation along with MATLAB is used to verify the proposed design. An application of proposed DCFR is shown in a high pass filter.