AD633JRZ is a 4-quadrant analog multiplier from Analog Devices. It features a 1 MHz bandwidth, 20 V/µs slew rate, and operates from ±8V to ±18V supplies.
Analog Devices AD834ARZ is a 4-quadrant analog multiplier IC with 500MHz bandwidth, 2% accuracy, and differential ±1V inputs. Housed in an 8-SOIC package.