Two new analog multipliers/dividers employing single current differencing buffer amplifier

Abstract

This paper presents two new analog multipliers/dividers using a new universal active element, called the current differencing buffered amplifier (CDBA). The reported circuits are suitable for monolithic chip realization for use in battery-powered, portable electronic equipments. The circuits can be used as a multiplier and divider without changing circuit topologies. The workability of the proposed configurations is tested through different applications with PSPICE simulations using TSMC 0.35 μm CMOS process parameters. The simulated results show that: for ±2.5 V power supply, the total harmonic distortions are less than 3.1% and 2.25% for the first and second configuration respectively. It also shows that the −3 dB bandwidths are 59.09 MHz and 68.55 MHz and static power dissipations are 0.28 mW and 0.23 mW respectively. The sensitivity of the output of the circuits is low with respect to temperature variations.