The AD834 is a monolithic, laser-trimmed four-quadrant analog multiplier intended for use in high-frequency applications, with a transconductance bandwidth (RL = 50 W) in excess of 500 MHz from either of the differential voltage inputs. In multiplier modes, the typical total full-scale error is 0.5%, dependent on the application mode and the external circuitry. Performance is relatively insensitive to temperature and supply variations, due to the use of stable biasing based on a band gap reference generator and other design features.