The ICL8013 is a four quadrant analog multiplier whose output is proportional to algebraic product of two input singnals. Feedback around an internal op amp provides level shifting and can be used to generate division and square root functions.

Accuray...............................+/-1%('B: Version)
Input Voltage Range......................+/-10V
Bandwidth.......................................1MHz
Uses standard +/-15V Supplies
Built -In Op Amp Provides Level Shifting, Division and Square Root Functions