AD538BD

Real-Time Analog Computational Unit (ACU) AD538 FEATURES FUNCTIONAL BLOCK DIAGRAM IX VX D 25kΩ 100Ω LOG RATIO VZ 25kΩ 100Ω IZ A INTERNAL VOLTAGE REFERENCE +10V +2V VY IY 25kΩ AD538 LOG C ANTILOG I OUTPUT APPLICATIONS One- or two-quadrant multiply/divide Log ratio computation Squaring/square rooting Trigonometric function approximations Linearization via curve fitting Precision AGC Power functions B VO 00959-001 VO = VY(VZ/VX)m transfer function Wide dynamic range (denominator) −1000:1 Simultaneous multiplication and division Resistor-programmable powers and roots No external trims required Low input offsets