The document introduces the Real-Time Analog Computational Unit (ACU) AD538 Rev. E. The product features wide dynamic range, simultaneous multiplication and division, resistor-programmable powers and roots, etc.
The AD538 Real‑Time Analog Computational Unit provides precision analog multiplication, division and exponentiation. It features low input offsets, a 400 kHz bandwidth, and a programmable ±4.5 V to ±18 V supply range, making it suitable for high‑accuracy analog signal processing.
The device is supplied in an 18‑lead TO‑118 hermetic DIP package and includes on‑chip voltage references (+2 V and +10 V). Detailed specifications, pin configurations, performance curves, and application examples such as transducer linearization and arc‑tangent approximation are provided throughout the document.
| Supply Voltage Range | ±4.5 V to ±18 V |
|---|---|
| Input Voltage Range | 100 mV – 10 V |
| Low Error | ±0.25 % of reading (100:1 range) |
| Bandwidth | 400 kHz |
The overall transfer function is VO = VY · (VZ/VX)^m.
It operates from ±4.5 V up to ±18 V.
The device has a bandwidth of 400 kHz.