New building block: multiplication-mode current conveyor

A new building block called the multiplication-mode current conveyor (MMCC) is proposed here. The structure consists of a differential voltage current conveyor (DVCC) and a folded Gilbert cell without any other auxiliary circuits. Based on the MMCC, a four-quadrant analogue multiplier is designed in TSMC 0.35 mum CMOS 2P4M processes with power supply plusmn 1.65 V. HSPICE post-layout simulation results show that the maximum DC operating range is plusmn 200 mV, the loading range is from 1 to 10 kOmega, the bandwidth is about 90 MHz, the total harmonic distortion (THD) is 0.85 , the power consumption is 1.08 mW and the chip area without pads is 0.48 times 0.36 mm 2 . The new square summer and analogue divider applications employing MMCCs are also presented.

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