Analog Devices Inc. 5B40-05-MB

Overview

5B40-05-MB from Analog Devices is a single-channel isolated analog input signal conditioner designed for industrial voltage measurement. It accepts ±50 mV input, delivers 0 V to +5 V output, provides 10 kHz bandwidth, 1500 V_rms isolation, and withstands 240 V_rms continuous input overvoltage-used in plastic injection molding pressure monitoring and crash-test strain sensing.

For engineers reviewing the 5B40-05-MB datasheet, 5B40-05-MB pinout, 5B40-05-MB application, or 5B40-05-MB equivalent, key selection criteria include input range compatibility (±50 mV), unipolar 0–5 V output requirement, transformer-based isolation integrity, hot-swap capability in 5B-series backplanes, and compliance with FM/CSA Class 1 Div 2 hazardous location standards.

Technical Context

The 5B40-05-MB implements chopper-stabilized amplification with laser-trimmed zero-scale offset subtraction, enabling precise expanded-scale measurements of small differential signals. Its input stage includes a single-pole anti-aliasing filter and 200 MΩ powered-on input resistance, while the output stage uses a three-pole low-pass filter to optimize noise performance at 10 kHz bandwidth.

Transformer-coupled isolation employs a proprietary modulation/demodulation scheme ensuring linear signal transfer without grounding constraints on the field side. The differential input is fully floating, and the output common must remain within ±3 V of power common-critical for maintaining accuracy in noisy industrial environments.

Key Specifications

Pinout & Package

5B40-05-MB uses a standardized 2.275" × 2.375" × 0.595" (57.8 mm × 59.1 mm × 15.1 mm) potted module package compatible with all 5B-series backplanes and sockets. Input connections are made via screw terminals labeled HI and LO; no PCB-mounted pins are present.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar isolated analog input conditioning applications.

Compared with 5B40-05 and 5B41-05, the 5B40-05-MB offers identical signal conditioning performance with factory-integrated mechanical mounting-eliminating assembly steps while preserving hot-swap compatibility and hazardous-area certifications required in OEM control systems.

Availability

5B40-05-MB is available at Aetrix Electronics and suitable for industrial signal isolation, plastic molding machine monitoring, and automotive test cell instrumentation requiring stable component supply across multi-year production programs.

Supply support for 5B40-05-MB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices is a global semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and industrial control.

The 5B Series was engineered specifically for rugged industrial signal conditioning-delivering transformer isolation, calibrated accuracy, and hot-swap readiness in compact potted modules approved for hazardous locations.

FAQ

What is the input voltage range supported by the 5B40-05-MB?

The 5B40-05-MB supports an input range of ±50 mV, optimized for low-level millivolt signals from strain gauges, thermopiles, and other precision sensors. This range is factory-set and cannot be adjusted in-field. The module's chopper-stabilized amplifier and laser-trimmed offset enable accurate zero-suppression, allowing users to resolve small signal variations even when a large ambient offset is present. All specifications-including accuracy and bandwidth-are guaranteed only within this defined ±50 mV span.

Does the 5B40-05-MB require external power supply filtering or decoupling?

No, the 5B40-05-MB operates from a single +5 V ±5% supply and draws 30 mA; its internal design includes robust power supply rejection (±2 µV/Vs%) and built-in filtering that meets EN50082-1 EMC requirements. External decoupling is unnecessary when installed per the 5B Series User Manual. The module has been validated to maintain <0.1% full-scale error under 10 V/m RFI fields up to 1 GHz, confirming its self-contained immunity without added components.

Can the 5B40-05-MB be used in Class 1, Division 2 hazardous locations?

Yes, the 5B40-05-MB is certified by Factory Mutual (FM) and the Canadian Standards Association (CSA) for Class 1, Division 2, Groups A, B, C, and D. These approvals confirm it is "nonincendive"-safe for use where flammable gases may exist only under fault conditions-without requiring explosion-proof enclosures. The certification applies to the complete potted module including its mounting bracket, and remains valid when installed in approved 5B-series backplanes with proper field wiring practices.

How does the 5B40-05-MB handle common-mode voltage on its input?

The 5B40-05-MB features a fully floating differential input with 1500 V_rms continuous input-to-output common-mode voltage rating and 100 dB CMR at 50/60 Hz with 1 kΩ source imbalance. Its transformer isolation eliminates ground loops, and the input circuitry withstands up to 240 V_rms continuously without damage. This makes the 5B40-05-MB suitable for measuring signals referenced to noisy or elevated potentials-such as motor phase currents or grounded thermocouple junctions-without signal corruption or component stress.

Is the 5B40-05-MB compatible with standard 5B-series backplanes?

Yes, the 5B40-05-MB shares identical mechanical dimensions (2.275" × 2.375" × 0.595"), pinout, and hot-swap functionality with all 5B Series modules. It mates seamlessly with 5B01, 5B08, and other FM/CSA-approved backplanes featuring screw-terminal field connections. No firmware, configuration, or jumper settings are required-the 5B40-05-MB operates immediately upon insertion, delivering calibrated 0–5 V output with no setup delay or calibration routine needed.