Analog Devices 3B41-01 Isolated Wideband V Input Module

Analog Devices 3B41-01 Isolated Wideband Voltage Input Module is a single-channel signal conditioning module in the 3B Series that provides galvanic isolation between a field voltage signal and the host data-acquisition or control system. It accepts a wideband voltage input and delivers two simultaneous outputs: a high-level voltage output selectable as 0 V to +10 V or ±10 V and a process current output in the 4–20 mA or 0–20 mA range, enabling direct integration with modern data-logger or PLC interfaces. The module offers robust protection and isolation, providing up to 1500 V peak isolation between input, power, and output, shielding the computer-side electronics from field faults and withstanding field-side over-voltage up to 220 V RMS. Bandwidth is specified as wideband at about 10 kHz, with a two-pole Butterworth filter to suppress high-frequency noise, ensuring stable measurements; custom input/output ranges are available via the 3B41-CUSTOM option. The 3B41-01 (also listed as 3B4101) is designed for use within the broader 3B Series I/O subsystem and typically powers from the standard Analog Devices supply rails (the datasheet notes ±15 V DC on the logic side and +24 V DC for the field side), making it suitable for industrial instrumentation, process monitoring, and data-acquisition applications where accurate, isolated voltage sensing is required.