PRODUCT DESCRIPTION
The AD538 is a monolithic real-time computational circuit that provides precision analog multiplication, division and exponentiation. The combination of low input and output offset voltages and excellent linearity results in accurate computation over an unusually wide input dynamic range. Laser wafer trimming makes multiplication and division with errors as low as 0.25% of reading possible, while typical output offsets of 100 µV or less add to the overall off-the-shelf performance level. Real-time analog signal processing is further enhanced by the device’s 400 kHz bandwidth.

FEATURES
   VOUT = 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 <100 μV
   Low Error ±0.25% of Reading (100:1 Range)
   +2 V and +10 V On-Chip References
   Monolithic Construction

APPLICATIONS
   One- or Two-Quadrant Mult/Div
   Log Ratio Computation
   Squaring/Square Rooting
   Trigonometric Function Approximations
   Linearization Via Curve Fitting
   Precision AGC
   Power Functions