AD538AD

ANALOG DEVICES  AD538AD  芯片, 实时模拟运算单元, 1%, DIP, 538

The is a real-time monolithic Analog Computational Unit ACU provides precision analogue 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 100µV or less add to the overall off-the-shelf performance level. Real-time analogue signal processing is further enhanced by the 400kHz bandwidth of the device. The overall transfer function of the AD538 is VO=VY VZ/VXm. Programming a particular function is via pin strapping. No external components are required for one-quadrant positive input multiplication and division. Two-quadrant bipolar numerator division is possible with the use of external level shifting and scaling resistors.

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Simultaneous multiplication and division

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Resistor-programmable powers and roots

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No external trims required

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Low error ±0.25% of reading 100:1 range

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Monolithic construction

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Real-time analogue multiplication, division and exponentiation

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High accuracy analogue division with a wide input dynamic range

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On-board +2 or +10V scaling reference

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Voltage and current summing input modes

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Monolithic construction with lower cost and higher reliability than hybrid and modular circuits

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1000:1 Wide dynamic range denominator

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<100µV Low input offsets