AD538 is a high-precision analog computational unit launched by Analog Devices (ADI), which can simultaneously perform multiplication, division and exponentiation operations, and support a wide range of applications.
The AD538 provides real‑time analog computation for multiplication, division and exponentiation. It features a wide 1000:1 input dynamic range, low input offsets, and an error as low as 0.25 % of reading. On‑chip reference voltages of +2 V and +10 V allow scaling without external components.
The device is supplied in an 18‑lead TO‑118 hermetic DIP and operates from +4.5 V to +18 V. It is available in industrial (‑25 °C to +85 °C) and military (‑55 °C to +125 °C) temperature grades, with typical bandwidth of 400 kHz.
| Dynamic Range | 1000:1 |
|---|---|
| Input Offset | <100 µV |
| Error | 0.25 % of Reading (100:1 Range) |
| On‑Chip References | +2 V and +10 V |
| Bandwidth | 400 kHz |
| Package | 18‑lead TO‑118 hermetic side‑brazed ceramic DIP |
| Temperature Range (Industrial) | -25 °C to +85 °C |
| Temperature Range (Military) | -55 °C to +125 °C |
The AD538’s transfer function is Vout = Vy · (Vz/Vx).
The maximum error is +0.25 % of reading plus 500 µV.
The AD538 provides selectable on‑chip references of +2 V (unbuffered) and +10 V (buffered).